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spellbob.c
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#include<stdio.h>
void main()
{
int n;
scanf("%d",&n);
while(n--)
{
char a[4];
char b[4];
scanf("%s%s",a,b);
int c1=0,c2=0,i,j,c3=0;
for(i=0;i<3;i++)
if( (a[i]=='b' && b[i]=='o') ||(b[i]=='b' && a[i]=='o'))
break;
printf("%d",i);
if(i!=3)
{
for(j=0;j<3;j++)
{
if(j!=i)
{
if( (a[j]=='b' && b[j]=='o') ||(b[j]=='b' && a[j]=='o'))
c1++;
else if(a[j]=='o'||b[j]=='o')
c2++;
else if(a[j]=='b'||b[j]=='b')
c3++;
}
}
if(c1==2 ||(c1==1 && c2==1)||(c3==2)||(c1==1 && c3==1)||(c2==1&&c3==1))
printf("yes\n");
else
printf("no\n");
}
else
{
for(i=0;i<3;i++)
{
if(a[i]=='b'||b[i]=='b')
c1++;
if(a[i]=='o'||b[i]=='o')
c2++;
}
if(c1>=2 && c2>=1)
printf("yes\n");
else
printf("no\n");
}
}
}