#include<bits/stdc++.h>
typedef long long int ll;
typedef unsigned long long int ull;
#define BIG_NUM 2000000000
#define HUGE_NUM 99999999999999999
#define MOD 1000000007
#define EPS 0.000000001
using namespace std;


#define NUM 60

enum Type{
	A,
	B,
};

int len[2],num_rule;
int table[2][NUM];
int num_left[NUM],from_table[NUM][10],to_table[NUM];
int max_match[NUM][NUM];
bool dp[2][NUM][NUM][30];
bool dp2[2][NUM][NUM][NUM][11];

void make_dp(Type type){

	int calc_len = 2*len[type]-1;

	for(int left = 0; left < calc_len; left++){
		for(int right = left; right < calc_len; right++){

			for(int num = 0; num < 30; num++){
				dp[type][left][right][num] = false;
			}

			for(int i = 0; i < num_rule; i++){
				for(int k = 0; k <= num_left[i]; k++){
					dp2[type][left][right][i][k] = false;
				}
			}
		}
	}

	for(int i = 0; i < calc_len; i++){
		dp[type][i][i][table[type][i]] = true;
	}

	int right;

	for(int length = 1; length <= len[type]; length++){
		for(int left = 0; left+length <= calc_len; left++){

			right = left+length-1;

			for(int i = 0; i < num_rule; i++){
				for(int k = 0; k < num_left[i]; k++){
					for(int mid = left; mid < right; mid++){

						if(dp2[type][left][mid][i][k] == true && dp[type][mid+1][right][from_table[i][k]] == true){
							dp2[type][left][right][i][k+1] = true;
						}
					}
				}
			}

			for(int i = 0; i < num_rule; i++){
				if(dp2[type][left][right][i][num_left[i]]){
					dp[type][left][right][to_table[i]] = true;
				}
			}

			for(int i = 0; i < num_rule; i++){
				if(dp[type][left][right][from_table[i][0]]){
					dp2[type][left][right][i][1] = true;
				}
			}
		}
	}
}

void func(){

	for(int i = 0; i < len[A]; i++){

		scanf("%d",&table[A][i]);
		table[A][i]--;
		table[A][i+len[A]] = table[A][i];
	}

	for(int i = 0; i < len[B]; i++){

		scanf("%d",&table[B][i]);
		table[B][i]--;
		table[B][i+len[B]] = table[B][i];
	}

	for(int i = 0; i < num_rule; i++){

		scanf("%d",&num_left[i]);

		for(int k = 0; k < num_left[i]; k++){
			scanf("%d",&from_table[i][k]);
			from_table[i][k]--;
		}
		scanf("%d",&to_table[i]);
		to_table[i]--;
	}

	make_dp(A);
	make_dp(B);

	int ans = -1;
	int A_right,B_right;

	for(int A_left = 0; A_left < len[A]; A_left++){
		for(int B_left = 0; B_left < len[B]; B_left++){

			for(int i = 0; i <= len[A]; i++){
				for(int k = 0; k <= len[B]; k++){
					max_match[i][k] = -1;
				}
			}

			max_match[0][0] = 0;

			for(int len_A = 1; len_A <= len[A]; len_A++){
				A_right = A_left+len_A-1;
				for(int len_B = 1; len_B <= len[B]; len_B++){
					B_right = B_left+len_B-1;
					for(int A_mid = A_left; A_mid <= A_right; A_mid++){
						for(int B_mid = B_left; B_mid <= B_right; B_mid++){
							if(max_match[A_mid-A_left][B_mid-B_left] == -1)continue;

							for(int i = 0; i < 30; i++){
								if(dp[A][A_mid][A_right][i] == true && dp[B][B_mid][B_right][i] == true){
									max_match[len_A][len_B] = max(max_match[len_A][len_B],max_match[A_mid-A_left][B_mid-B_left]+1);
								}
							}
						}
					}
				}
				ans = max(ans,max_match[len[A]][len[B]]);
			}
		}
	}
	printf("%d\n",ans);
}

int main(){

	while(true){
		scanf("%d %d %d",&len[A],&len[B],&num_rule);
		if(len[A] == 0 && len[B] == 0 && num_rule == 0)break;

		func();
	}

	return 0;
}



Measured memory_bytes: 5380