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

ans = [[i%M+1 for i in range(N)] for _ in range(M)]
for i in range(M):
    ans[i] = ans[i][(-i*K)%M:] + ans[i][:(-i*K)%M]

for i in range(N//M):
    for j in ans:
        print(*j)