The sample output is coming out correct but test cases are failing

#1
#2

hello @pranaynigam

in line 31, it is not n , it should be the test case number

#3

still test cases are giving TLE. i even changed my way of checking for “bb”.

#4

dont genrate all perumuations and then check whether string is valid or not.
instead genrate only valid permuattion.

#5

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