## https://yukicoder.me/problems/no/2733

MOD = 998244353

def main():
    N, M, K = map(int, input().split())
    next_nodes = [[] for _ in range(N)]
    for _ in range(M):
        u, v = map(int, input().split())
        next_nodes[u - 1].append(v - 1)
        next_nodes[v - 1].append(u - 1)
    
    # 1回目
    pow_number = 0
    dp = [[0] * N for _ in range((K + 1) ** N)]
    for i in range(N):
        pow_number = (K + 1) ** i
        dp[pow_number][i] = 1

    
    for bit in range(1, (K + 1) ** N):

        x = [0] * N
        bit0 = bit
        for i in range(N):
            x[i] = bit0 % (K + 1)
            bit0 //= (K + 1)

        for from_i in range(N):
            if x[from_i] == 0:
                continue

            for to_i in next_nodes[from_i]:
                if x[to_i] == K:
                    continue

                new_bit = bit + (K + 1) ** to_i 
                dp[new_bit][to_i] += dp[bit][from_i]
                dp[new_bit][to_i] %= MOD
    
    answer = 0
    for i in range(N):
        answer += dp[-1][i]
        answer %= MOD
    print(answer)







        





    



if __name__ == "__main__":
    main()