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 tot==1:
    if X>9:
        print(-1)
    else:
        for y in range(3):
            for x in range(3):
                if A[y][x]=="1":
                    A[y][x] = str(X)
        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]))
elif tot==2:
    if X>18:
        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
                        break
                    elif A[y][x]=="1":
                        A[y][x]="0"
        elif 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] = "9"
                        flag = 1
                    elif A[y][x]=="1" and flag==1:
                        A[y][x] = str(X-9)
                        flag = 2
        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]))
elif tot==4:
    if X>36:
        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]))