import sys
input = sys.stdin.readline

from itertools import product
mod=998244353

N,M,K=map(int,input().split())
E=[[] for i in range(N)]

for i in range(M):
    u,v=map(int,input().split())
    u-=1
    v-=1
    E[u].append(v)
    E[v].append(u)

def enc(x):
    now=1
    ANS=0
    for i in range(1,len(x)):
        ANS+=now*x[i]
        now*=K+1
    ANS+=now*x[0]
    return ANS

def dec(x):
    X=[]
    for i in range(N):
        X.append(x%(K+1))
        x//=K+1
    X=[x]+X

    return X

DP=[0]*(((K+1)**N)*N)

for i in range(N):
    x=[i]+[0]*N
    x[i+1]+=1
    DP[enc(x)]=1


P=list(product(range(0,K+1),repeat=N))
P.sort(key=lambda x:sum(x))

xx=(K+1)**N
for Y in P:
    for i in range(N):
        X=[i]+list(Y)
        if i==0:
            pp=enc(X)
            k=DP[pp]
        else:
            pp+=xx
            k=DP[pp]
        if k==0:
            continue
        #print(X)

        for to in E[i]:
            if X[to+1]+1<=K:
                X[to+1]+=1
                X[0]=to
                qq=enc(X)
                DP[qq]=(DP[qq]+k)%mod
                X[to+1]-=1

ANS=0
for i in range(N):
    x=[i]+[K]*N
    ANS+=DP[enc(x)]

print(ANS%mod)