N,M,K = map(int,input().split())
G = [[] for _ in range(N)]
for _ in range(M):
    u,v = map(int,input().split())
    u -= 1
    v -= 1
    G[u].append(v)
    G[v].append(u)

P = 998244353
C = (K + 1) ** N
dp = [[0] * N for _ in range(C)]
for i in range(N):
    dp[(K + 1) ** i][i] = 1
m = [(K + 1) ** i for i in range(N)]
for bit in range(C):
    dat = [0] * N
    b = bit
    for i in range(N):
        dat[i] = b % (K + 1)
        b //= (K + 1)
    for i in range(N):
        for v in G[i]:
            if dat[v] + 1 <= K:
                dp[bit + m[v]][v] += dp[bit][i]
                dp[bit + m[v]][v] %= P
ans = 0
for i in range(N):
    ans += dp[-1][i]
print(ans%P)