W,H,X = map(int,input().split())
A = [["1" for _ in range(W+2)] for _ in range(H+2)]
for y in range(0,H+2,3):
    for x in range(W+2):
        A[y][x] = "0"
for x in range(0,W+2,3):
    for y in range(H+2):
        A[y][x] = "0"
for y in range(H+1,0,-3):
    for x in range(W+2):
        A[y][x] = "0"
for x in range(W+1,0,-3):
    for y in range(H+2):
        A[y][x] = "0"
tot = 0
for y in range(3):
    for x in range(3):
        tot += int(A[y][x])
if X>tot*9:
    print(-1)
else:
    if X<=9:
        flag = 0
        for y in range(3):
            for x in range(3):
                if A[y][x]=="1" and flag==0:
                    A[y][x]=str(X)
                    flag = 1
                elif A[y][x]=="1":
                    A[y][x] = "0"
    elif 9<X<=18:
        flag = 0
        for y in range(3):
            for x in range(3):
                if A[y][x]=="1" and flag==0:
                    A[y][x]="9"
                    flag = 1
                elif A[y][x]=="1" and flag==1:
                    A[y][x] = str(X-9)
                    flag = 2
                elif A[y][x]=="1":
                    A[y][x] = "0"
    elif 18<X<=27:
        flag = 0
        for y in range(3):
            for x in range(3):
                if A[y][x]=="1" and flag==0:
                    A[y][x]="9"
                    flag = 1
                elif A[y][x]=="1" and flag==1:
                    A[y][x]="9"
                    flag = 2
                elif A[y][x]=="1" and flag==2:
                    A[y][x]=str(X-18)
                    flag = 3
                elif A[y][x]=="1":
                    A[y][x]="0"
    else:
        flag = 0
        for y in range(3):
            for x in range(3):
                if A[y][x]=="1" and flag==0:
                    A[y][x]="9"
                    flag = 1
                elif A[y][x]=="1" and flag==1:
                    A[y][x]="9"
                    flag = 2
                elif A[y][x]=="1" and flag==2:
                    A[y][x]="9"
                    flag = 3
                elif A[y][x]=="1" and flag==3:
                    A[y][x]=str(X-27)
                    flag = 4
    for y in range(H+2):
        for x in range(W+2):
            A[y][x] = A[y%3][x%3]
    for y in range(1,H+1):
        print("".join(A[y][1:W+1]))