Why my PALINGAM code is wrong?

for test in range(int(input())):
c=0
a=input()
b=input()
for i in range(0,len(a)):
if(a.count(a[i])==2 and a!=b):
c=1
print(“A”)
break
if(len(a)==1 and b!=a and c==0):
c=1
print(“B”)
if(a==b and c==0):
c=1
print(“B”)
a1=a[:len(a)//2]
a2=a[len(a)//2+1:]
b1=b[:len(b)//2]
b2=b[len(b)//2+1:]
if(a1==a2 and b1!=b2 and c==0):
c=1
print(“A”)
if(b1==b2 and a1!=a2 and c==0):
c=1
print(“B”)
if(a1==a2 and b1==b2 and c==0):
c=1
print(“A”)
if(c==0):
print(“B”)
It would be helpful if critical test cases are given which fails through this code.

1
cdd
edd

Answer should be B here… Hope this will help to debug…

You may look into my code here for help…

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