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""" Challenge 154 Task 1 LK """
from itertools import permutations
def find_missing(what: list):
"""Find the missing permutations"""
all_perms = permutations("PERL")
output = []
for perm in all_perms:
look_str = "".join(perm)
if look_str not in what:
output.append(look_str)
return output
assert find_missing(
[
"PELR",
"PREL",
"PERL",
"PRLE",
"PLER",
"PLRE",
"EPRL",
"EPLR",
"ERPL",
"ERLP",
"ELPR",
"ELRP",
"RPEL",
"RPLE",
"REPL",
"RELP",
"RLPE",
"RLEP",
"LPER",
"LPRE",
"LEPR",
"LRPE",
"LREP",
]
) == ["LERP"]
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