/*
 * CRSCNTRY.cpp
 *
 *  Created on: Jun 10, 2014
 *      Author: Arpit Bhayani
 */

#include <cstdio>
#include <cstdlib>
#include <iostream>

using namespace std;

#define DEBUG 0
#define gc getchar
#define ll long long

void scanint(int &x) {
    register int c = gc();
    x = 0;
    for (; (c < 48 || c > 57); c = gc())
        ;
    for (; c > 47 && c < 58; c = gc()) {
        x = (x << 1) + (x << 3) + c - 48;
    }
}

int readline(char * str) {

    int i = 0;
    char ch;
    while ((ch = getchar()) != '\n') {
        str[i++] = ch;
    }
    str[i] = '\0';
    return i;
}

int array[2002][2002];
int a[2002], b[2002];

int lcs(int n, int m) {

    for (int i = 0; i < n + 1; i++) {
        for (int j = 0; j < m + 1; j++) {
            if (i == 0 || j == 0)
                array[i][j] = 0;
            else if (a[i - 1] == b[j - 1]) {
                array[i][j] = array[i - 1][j - 1] + 1;
            } else {
                array[i][j] = max(array[i - 1][j], array[i][j - 1]);
            }
        }
    }

    return array[n][m];
}

int main(int argc, char * argv[]) {

    int t, temp;
    scanf("%d", &t);
    while (t--) {

        int n = 0, m = 0;

        while (1) {
            scanint(temp);

            if (temp == 0)
                break;

            a[n++] = temp;
        }

        int max = -1;
        while (1) {
            int val;
            scanint(val);

            if (val == 0)
                break;

            b[0] = val;
            m = 1;

            while (1) {
                scanint(val);
                if (val == 0)
                    break;
                b[m++] = val;
            }

            int templcs = lcs(n, m);

            if ( templcs > max )
                max = templcs;
        }

        printf("%d\n" , max);

    }
    return 0;
}