text = ""

with open('wall.txt','r') as file:
	text = file.read()

# Split the text into sentences
sentences = text.split('.')

# Find sentences without new lines
sentences_without_newlines = [sentence for sentence in sentences if '\n' not in sentence]
sentences_without_newlines = [sentence for sentence in sentences_without_newlines if len(sentence.split(' ')) > 3]

# Print the results
clean = ""
for sentence in sentences_without_newlines:
    clean+=sentence.strip() + '.\n'
    
with open('sentences.txt','w') as file:
	file.write(clean)