#include <bits/stdc++.h>
using namespace std;

#define FOR(i, a, b) for(int i = (a); i < (b); i++)
#define RFOR(i, b, a) for(int i = (b) - 1; i >= (a); i--)
#define SZ(a) (int)a.size()
#define ALL(a) a.begin(), a.end()
#define PB push_back
#define MP make_pair
#define F first
#define S second

typedef long long LL;
typedef vector<int> VI;
typedef pair<int, int> PII;
typedef double db;

const int ALP = 26;
const int N = 1 << 20;
const int M = 1 << 10;

int nxt[N][ALP];
int dp[M][M];

void solve()
{
	string s, t;
	cin >> s >> t;
	int n = SZ(s), m = SZ(t);
	FOR(j, 0, ALP)
		nxt[n][j] = n;
	RFOR(i, n, 0)
		FOR(j, 0, ALP)
			nxt[i][j] = s[i] - 'a' == j ? i : nxt[i + 1][j];
	FOR(i, 0, m + 1)
		FOR(j, 0, m + 1)
			dp[i][j] = n;
	dp[0][0] = 0;
	int ans = 0;
	FOR(i, 0, m)
		FOR(j, 0, m + 1)
		{
			dp[i + 1][j] = min(dp[i + 1][j], dp[i][j]);
			int k = dp[i][j];
			if (j < m && nxt[k][t[i] - 'a'] < n)
			{
				dp[i + 1][j + 1] = min(dp[i + 1][j + 1], nxt[k][t[i] - 'a'] + 1);
				ans = max(ans, j + 1);
			}
		}
	cout << ans << "\n";
}

int main()
{
    ios::sync_with_stdio(0); 
    cin.tie(0);
	cout << fixed << setprecision(15);
	int t;
	cin >> t;
	while (t--)
		solve();
	return 0;
}