"""



"""

N,M,K = map(int,input().split())

lis = [[0] * N for i in range(N)]
for i in range(M):
    u,v = map(int,input().split())
    u -= 1
    v -= 1
    lis[u][v] = lis[v][u] = 1

XXX = (K+1)**N

dp = [[0]*XXX for i in range(N)]

for i in range(N):
    dig = (K+1)**i
    dp[i][dig] = 1


mod = 998244353

for bits in range(XXX):

    stats = []

    bitscp = bits
    for v in range(N):
        stats.append( bitscp % (K+1) )
        bitscp //= K+1

    for v in range(N):
        for u in range(N):
            if lis[v][u] == 1 and stats[u] < K:

                stats[u] += 1

                nexbit = 0
                for x in reversed(stats):
                    nexbit *= K+1
                    nexbit += x
                stats[u] -= 1

                dp[u][nexbit] += dp[v][bits]
                dp[u][nexbit] %= mod

ans = 0
for v in range(N):
    ans += dp[v][-1]
    ans %= mod
print (ans)