#include <iostream>
#include <string.h>
using namespace std;
#define NUM 100
int public_length(char *a, char *b)
{
int lena = strlen(a);
int lenb = strlen(b);
int DP[NUM][NUM];
for(int i=0; i<=lena; i++)
DP[i][0] = 0;
for(int j=0; j<=lenb; j++)
DP[0][j] = 0;
for(int i=1; i<=lena; i++)
for(int j=1; j<=lenb; j++)
{
if(a[i-1] == b[j-1])
{
DP[i][j] = DP[i-1][j-1] + 1;
}
else
{
if(DP[i-1][j] < DP[i][j-1])
DP[i][j] = DP[i][j-1];
else
DP[i][j] = DP[i-1][j];
}
}
return DP[lena][lenb];
}
int main()
{
char a[NUM];
char b[NUM];
int T;
cin>>T;
for(int i=0; i<T; i++)
{
cin>>a;
cin>>b;
int result = public_length(a, b);
cout<<result<<endl;
}
return 0;
}