pythondef solve(S):
words = S.split()
trans = str.maketrans(
"bcdwtjfqlvsxpmhkngzr",
"11223344556677889900", "aeiouy.,")
ret = []
for w in words:
w = w.lower()
w = str.translate(w, trans)
if w:
ret.append(w)
return ret