import sys
def sol(ans):
    for i in range(H):
        for j in range(W):

            now = 0
            for x in range(i-1,i+2):
                for y in range(j-1,j+2):
                    if 0 <= x < H and 0 <= y < W:
                        now += ans[x][y]
            if now != X:
                return False
    for i in ans:
        print ("".join(map(str,i)))
    sys.exit()

W,H,X = map(int,input().split())
ans = [[0] * W for i in range(H)]

# type1
for A in range(10):
    for i in range(H):
        for j in range(W):
            if i % 3 == 1:
                ans[i][j] = A
            else:
                ans[i][j] = 0
    sol(ans)

for A in range(10):
    for i in range(H):
        for j in range(W):
            if j % 3 == 1:
                ans[i][j] = A
            else:
                ans[i][j] = 0
    sol(ans)

#type3
for A in range(10):
    for i in range(H):
        for j in range(W):
            if i % 3 == j % 3 == 1:
                ans[i][j] = A
            else:
                ans[i][j] = 0
    sol(ans)

#type2
for A in range(10):
    for B in range(10):
        for i in range(H):
            for j in range(W):
                if i % 3 == 2 or j % 3 == 2:
                    ans[i][j] = 0
                elif i % 3 == j % 3:
                    ans[i][j] = A
                else:
                    ans[i][j] = B
        sol(ans)

print ("4",file=sys.stderr)
#type4
for A in range(10):
    for B in range(10):
        for C in range(10):
            for D in range(10):

                if A+B+C+D == X:
                    for i in range(H):
                        for j in range(W):
                            if i % 3 == 2 or j % 3 == 2:
                                ans[i][j] = 0
                            elif i % 3 == j % 3 == 0:
                                ans[i][j] = A
                            elif i % 3 == 0 and j % 3 == 1:
                                ans[i][j] = B
                            elif i % 3 == 1 and j % 3 == 0:
                                ans[i][j] = C
                            else:
                                ans[i][j] = D
                    sol(ans)
print (-1)