import sys
import numpy as np

readline = sys.stdin.readline
read = sys.stdin.read

w, h, x = map(int, readline().split())
if x <= 9:
    ans = np.zeros((h,w), dtype=np.int64)
    f = [1,0,0]
    ans[f[h%3]::3,f[w%3]::3] = x
    for l in ans:
        print(''.join(map(str, l)))
    sys.exit()
if x <= 18:
    if w % 3 == 2:
        ans = np.zeros((h,w), dtype=np.int64)
        f = [1,0,0]
        ans[f[h%3]::3,::3] = 9
        ans[f[h%3]::3,1::3] = x - 9
        for l in ans:
            print(''.join(map(str, l)))
        sys.exit()
    if h % 3 == 2:
        ans = np.zeros((h,w), dtype=np.int64)
        f = [1,0,0]
        ans[::3,f[w%3]::3] = 9
        ans[1::3,f[w%3]::3] = x - 9
        for l in ans:
            print(''.join(map(str, l)))
        sys.exit()
if x <= 36 and h % 3 == 2 and w % 3 == 2:
    ans = np.zeros((h,w), dtype=np.int64)
    if x <= 27:
        a = np.array([[9,9,0],[x-18,0,0],[0,0,0]], dtype=np.int64)
    else:
        a = np.array([[9,9,0],[9,x-27,0],[0,0,0]], dtype=np.int64)
    ans = np.tile(a,((h+1)//3,(w+1)//3))[:-1,:-1]
    for l in ans:
        print(''.join(map(str, l)))
    sys.exit()
print(-1)