from collections import defaultdict
mod = 998244353

N, M, K = map(int, input().split())
pows = [(K + 1) ** i for i in range(N + 1)]
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)

dp = [[0] * N for _ in range(pows[N])]
for i in range(N):
	dp[pows[i]][i] = 1

for i in range(pows[N]):
	for u in range(N):
		x = (i // pows[u]) % (K + 1)
		if 0 < x:
			for v in g[u]:
				y = (i // pows[v]) % (K + 1)
				if y < K:
					dp[i + pows[v]][v] += dp[i][u]
					dp[i + pows[v]][v] %= mod

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