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## Example 1
## arrStr = ["ad", "bd", "aaab", "baa", "badab"]
## strAllowed = "ab"
## Example 2
## arrStr = ["a", "b", "c", "ab", "ac", "bc", "abc"]
## strAllowed = "abc"
## Example 3
arrStr = ["cc", "acd", "b", "ba", "bac", "bad", "ac", "d"]
strAllowed = "cad"
arrOutput = []
for strLoop in arrStr:
arrTemp = [charLoop for charLoop in set(strLoop) if charLoop not in strAllowed]
if len(arrTemp) == 0:
arrOutput.append(strLoop)
print (len(arrOutput))
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