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- t=int(input())
- for i in range(t):
- s=input()
- r=s[::-1]
- if (s==r):
- print(-1)
- else:
- for x in range(len(s)):
- st=s[:x]+s[x+1:]
- r=st[::-1]
- if(st==r):
- print(x)
- break
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