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import sys
def a(word):
A = []
if len(word) == 1:
A.append(word)
return A
letters = list(word)
for i in range(len(word)):
leftover = ""
for j in range(len(word)):
if i == j:
continue
else:
leftover += letters[j]
new_words = a(leftover)
for w in new_words:
new_word = letters[i] + w
A.append(new_word)
return A
args = sys.argv[1:]
for word in args:
words = set(a(word.lower()))
fn = "/usr/share/dict/words"
with open(fn, "r") as file:
lines = file.readlines()
file.close()
for i in range(len(lines)):
lines[i] = lines[i].lower().rstrip("\n")
output = []
for w in words:
if w in lines:
output.append(w)
for out in output:
print(out)
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