W, H, X = map(int, input().split()) ans = [[0]*W for _ in range(H)] if X>36: print(-1) elif H%3==2 and W%3==2: a = min(9,X) b = min(9,X-a) c = min(9,X-a-b) d = max(0,X-27) for i in range(0,H,3): for j in range(0,W,3): ans[i][j] = a for j in range(1,W,3): ans[i][j] = b for i in range(1,H,3): for j in range(0,W,3): ans[i][j] = c for j in range(1,W,3): ans[i][j] = d for a in ans: print(*a) elif H%3==2: if X>18: print(-1) else: a = min(9,X) b = max(0,X-9) if W%3==1: for i in range(0,H,3): for j in range(0,W,3): ans[i][j] = a for i in range(1,H,3): for j in range(0,W,3): ans[i][j] = b else: for i in range(0,H,3): for j in range(1,W,3): ans[i][j] = a for i in range(1,H,3): for j in range(1,W,3): ans[i][j] = b for a in ans: print(*a) elif W%3==2: if X>18: print(-1) else: a = min(9,X) b = max(0,X-9) if H%3==1: for i in range(0,H,3): for j in range(0,W,3): ans[i][j] = a for j in range(1,W,3): ans[i][j] = b else: for i in range(1,H,3): for j in range(0,W,3): ans[i][j] = a for j in range(1,W,3): ans[i][j] = b for a in ans: print(*a) else: if X>9: print(-1) else: a = X if H%3==1 and W%3==1: for i in range(0,H,3): for j in range(0,W,3): ans[i][j] = a elif H%3==1: for i in range(0,H,3): for j in range(1,W,3): ans[i][j] = a elif W%3==1: for i in range(1,H,3): for j in range(0,W,3): ans[i][j] = a else: for i in range(1,H,3): for j in range(1,W,3): ans[i][j] = a for a in ans: print(*a)