MOD = 998244353

def main():
    import sys
    input = sys.stdin.read
    data = input().split()
    idx = 0
    N = int(data[idx])
    idx += 1
    dice = []
    for _ in range(N):
        faces = list(map(int, data[idx:idx+6]))
        idx +=6
        unique = list(set(faces))
        dice.append(unique)
    
    current_set = set()
    for i in range(N):
        die = dice[i]
        if i ==0:
            new_set = set()
            for d in die:
                counts = [0]*9
                counts[d-1] =1
                new_set.add(tuple(counts))
            current_set = new_set
        else:
            new_set = set()
            for counts in current_set:
                for d in die:
                    new_counts = list(counts)
                    new_counts[d-1] +=1
                    new_tuple = tuple(new_counts)
                    new_set.add(new_tuple)
            current_set = new_set
    
    max_n = N
    fact = [1]*(max_n+1)
    for i in range(1, max_n+1):
        fact[i] = fact[i-1] *i % MOD
    
    ans =0
    for counts in current_set:
        product = 1
        for c in counts:
            product = product * fact[c] % MOD
        inv_product = pow(product, MOD-2, MOD)
        res = fact[N] * inv_product % MOD
        ans = (ans + res) % MOD
    print(ans % MOD)

if __name__ == '__main__':
    main()