diff --git a/aufgabe3/Tutorium3.md b/aufgabe3/Tutorium3.md
new file mode 100644
index 0000000000000000000000000000000000000000..602136f5f0d47dd6da5b1bcde88ff44b02c0bbbb
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+++ b/aufgabe3/Tutorium3.md
@@ -0,0 +1,9 @@
+git clone https://gitlab.cs.fau.de/bi40resu/python-tutorium
+
+# Aufgabe 3.1
+
+Schreiben Sie eine Funktion, die prüft ob man aus den Buchstaben eines bestimmten String einen neuen String bilden kann oder nicht.
+
+Beispiel:
+ - can_write_string('foo', 'the folk of ni') -> True
+ - can_write_string('catnip', 'cats love me') -> False
diff --git a/aufgabe3/freq_dict.py b/aufgabe3/freq_dict.py
new file mode 100755
index 0000000000000000000000000000000000000000..de9ccf6c6ab8f752ab31ec3191144d9389d2db93
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+++ b/aufgabe3/freq_dict.py
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+#!/usr/bin/env python3
+
+
+def sanitize(string):
+
+ s = string.replace(',', '')
+ s = s.replace('.', '')
+
+ return s
+
+def main():
+
+ filename = 'wizardofoz.txt'
+
+ with open(filename) as f:
+ content = f.read()
+ tokens = sanitize(content).split()
+
+ try:
+ create_freq_dict(tokens)
+ except Exception as e:
+ print("Error while calling function:")
+ print(e)
+
+if __name__ == '__main__':
+
+ main()
diff --git a/aufgabe3/wizardofoz.txt b/aufgabe3/wizardofoz.txt
new file mode 100644
index 0000000000000000000000000000000000000000..0617495f3eb966c6bc501363b087422d9a63d59c
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+++ b/aufgabe3/wizardofoz.txt
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+Dorothy lived in the midst of the great Kansas prairies, with Uncle
+Henry, who was a farmer, and Aunt Em, who was the farmer's wife. Their
+house was small, for the lumber to build it had to be carried by wagon
+many miles. There were four walls, a floor and a roof, which made one
+room; and this room contained a rusty looking cookstove, a cupboard for
+the dishes, a table, three or four chairs, and the beds. Uncle Henry
+and Aunt Em had a big bed in one corner, and Dorothy a little bed in
+another corner. There was no garret at all, and no cellar--except a
+small hole dug in the ground, called a cyclone cellar, where the family
+could go in case one of those great whirlwinds arose, mighty enough to
+crush any building in its path. It was reached by a trap door in the
+middle of the floor, from which a ladder led down into the small, dark
+hole.
+
+When Dorothy stood in the doorway and looked around, she could see
+nothing but the great gray prairie on every side. Not a tree nor a
+house broke the broad sweep of flat country that reached to the edge of
+the sky in all directions. The sun had baked the plowed land into a
+gray mass, with little cracks running through it. Even the grass was
+not green, for the sun had burned the tops of the long blades until
+they were the same gray color to be seen everywhere. Once the house
+had been painted, but the sun blistered the paint and the rains washed
+it away, and now the house was as dull and gray as everything else.
+
+When Aunt Em came there to live she was a young, pretty wife. The sun
+and wind had changed her, too. They had taken the sparkle from her
+eyes and left them a sober gray; they had taken the red from her cheeks
+and lips, and they were gray also. She was thin and gaunt, and never
+smiled now. When Dorothy, who was an orphan, first came to her, Aunt
+Em had been so startled by the child's laughter that she would scream
+and press her hand upon her heart whenever Dorothy's merry voice
+reached her ears; and she still looked at the little girl with wonder
+that she could find anything to laugh at.
+
+Uncle Henry never laughed. He worked hard from morning till night and
+did not know what joy was. He was gray also, from his long beard to
+his rough boots, and he looked stern and solemn, and rarely spoke.
+
+It was Toto that made Dorothy laugh, and saved her from growing as gray
+as her other surroundings. Toto was not gray; he was a little black
+dog, with long silky hair and small black eyes that twinkled merrily on
+either side of his funny, wee nose. Toto played all day long, and
+Dorothy played with him, and loved him dearly.
+
+Today, however, they were not playing. Uncle Henry sat upon the
+doorstep and looked anxiously at the sky, which was even grayer than
+usual. Dorothy stood in the door with Toto in her arms, and looked at
+the sky too. Aunt Em was washing the dishes.
+
+From the far north they heard a low wail of the wind, and Uncle Henry
+and Dorothy could see where the long grass bowed in waves before the
+coming storm. There now came a sharp whistling in the air from the
+south, and as they turned their eyes that way they saw ripples in the
+grass coming from that direction also.
+
+Suddenly Uncle Henry stood up.
+
+"There's a cyclone coming, Em," he called to his wife. "I'll go look
+after the stock." Then he ran toward the sheds where the cows and
+horses were kept.
+
+Aunt Em dropped her work and came to the door. One glance told her of
+the danger close at hand.
+
+"Quick, Dorothy!" she screamed. "Run for the cellar!"
+
+Toto jumped out of Dorothy's arms and hid under the bed, and the girl
+started to get him. Aunt Em, badly frightened, threw open the trap
+door in the floor and climbed down the ladder into the small, dark
+hole. Dorothy caught Toto at last and started to follow her aunt.
+When she was halfway across the room there came a great shriek from the
+wind, and the house shook so hard that she lost her footing and sat
+down suddenly upon the floor.
+
+Then a strange thing happened.
+
+The house whirled around two or three times and rose slowly through the
+air. Dorothy felt as if she were going up in a balloon.
+
+The north and south winds met where the house stood, and made it the
+exact center of the cyclone. In the middle of a cyclone the air is
+generally still, but the great pressure of the wind on every side of
+the house raised it up higher and higher, until it was at the very top
+of the cyclone; and there it remained and was carried miles and miles
+away as easily as you could carry a feather.
+
+It was very dark, and the wind howled horribly around her, but Dorothy
+found she was riding quite easily. After the first few whirls around,
+and one other time when the house tipped badly, she felt as if she were
+being rocked gently, like a baby in a cradle.
+
+Toto did not like it. He ran about the room, now here, now there,
+barking loudly; but Dorothy sat quite still on the floor and waited to
+see what would happen.
+
+Once Toto got too near the open trap door, and fell in; and at first
+the little girl thought she had lost him. But soon she saw one of his
+ears sticking up through the hole, for the strong pressure of the air
+was keeping him up so that he could not fall. She crept to the hole,
+caught Toto by the ear, and dragged him into the room again, afterward
+closing the trap door so that no more accidents could happen.
+
+Hour after hour passed away, and slowly Dorothy got over her fright;
+but she felt quite lonely, and the wind shrieked so loudly all about
+her that she nearly became deaf. At first she had wondered if she
+would be dashed to pieces when the house fell again; but as the hours
+passed and nothing terrible happened, she stopped worrying and resolved
+to wait calmly and see what the future would bring. At last she
+crawled over the swaying floor to her bed, and lay down upon it; and
+Toto followed and lay down beside her.
+
+In spite of the swaying of the house and the wailing of the wind,
+Dorothy soon closed her eyes and fell fast asleep.