from itertools import product

W, H, X = map(int, input().split())

if X > 9 * 4:
    print(-1)
    exit()


def is_ok():
    for y in range(H):
        for x in range(W):
            t = 0
            for dy, dx in [(-1, -1), (-1, 0), (-1, 1), (0, -1), (0, 0), (0, 1), (1, -1), (1, 0), (1, 1)]:
                ny, nx = y + dy, x + dx
                if ny < 0 or ny >= H or nx < 0 or nx >= W:
                    continue
                t += result[ny][nx]
            if t != X:
                return False
    return True

result = [None] * H
for p in product(range(0, 10), repeat=H * W):
    for y in range(H):
        result[y] = list(p[W * y:W * (y + 1)])
    if is_ok():
        for y in range(H):
            print(*result[y], sep='')
        exit()
print(-1)