def test_decipher_bifid5():
assert decipher_bifid5("AB", "AB") == "AB"
assert decipher_bifid5("CO", "CD") == "AB"
assert decipher_bifid5("ch", "c") == "AB"
assert decipher_bifid5("b ac", "b") == "ABC"
def test_decipher_bifid5():
assert decipher_bifid5("AB", "AB") == "AB"
assert decipher_bifid5("CO", "CD") == "AB"
assert decipher_bifid5("ch", "c") == "AB"
assert decipher_bifid5("b ac", "b") == "ABC"
from sympy.crypto.crypto import decipher_bifid5
alphabet = set(__import__("string").ascii_letters[:26])
pangrams = [
'mrjocktvquizphdbagsfewlynx', 'jocknymphswaqfdrugvexblitz',
'crwthvoxzapsqigymfjeldbunk', 'hmfjordwaltzcinqbuskpyxveg',
'phavfyxbugstonqmilkjzdcrew', 'hesaidbcfgjklmnopqrtuvwxyz',
'jenqvahlbidgumkrwcfpostxyz', 'emilyqjungschwarzkopfxtvbd',
'johnfezcamrwsputyxigkqblvd', 'qtipforsuvnzxylemdcbaghwjk',
'jumblingvextfrowzyhackspdq', 'jqvandzstruckmybigfoxwhelp',
'lumpydrabcgqvzjinksfoxthew', 'heyiamnopqrstuvwxzbcdfgjkl',
'quizjvbmwlynxstockderpaghf', 'pledbigczarjunksmyvwfoxthq',
'waltzgbquickfjordsvexnymph', 'qwertyuioplkjhgfdsazxcvbnm',
'zyxwvutsrqponmlkjihgfedcba', 'aquickbrownfxjmpsvethlzydg'
]
res = "snbwmuotwodwvcywfgmruotoozaiwghlabvuzmfobhtywftopmtawyhifqgtsiowetrksrzgrztkfctxnrswnhxshylyehtatssukfvsnztyzlopsv"
if __name__ == "__main__":
for i in alphabet:
for key in pangrams[::-1]:
res = decipher_bifid5(res, key.replace(i, ""))
print(res)
