import java.util.*; @SuppressWarnings("unused") public class Main { private static void solve() { int w = ni(); int h = ni(); int x = ni(); if (x > 36) { System.out.println(-1); return; } int[] a = new int[4]; boolean[] b = new boolean[4]; if (w % 3 == 0 && h % 3 == 0) { b[3] = true; } else if (w % 3 == 0 && h % 3 == 1) { b[1] = true; } else if (w % 3 == 0 && h % 3 == 2) { b[1] = true; b[3] = true; } else if (w % 3 == 1 && h % 3 == 0) { b[2] = true; } else if (w % 3 == 1 && h % 3 == 1) { b[0] = true; } else if (w % 3 == 1 && h % 3 == 2) { b[0] = true; b[2] = true; } else if (w % 3 == 2 && h % 3 == 0) { b[2] = true; b[3] = true; } else if (w % 3 == 2 && h % 3 == 1) { b[0] = true; b[1] = true; } else { b[0] = b[1] = b[2] = b[3] = true; } for (int i = 0; i < 4; i++) { if (b[i]) { int v = Math.min(9, x); a[i] = v; x -= v; } } if (x > 0) { System.out.println(-1); return; } for (int i = 0; i < h; i++) { for (int j = 0; j < w; j++) { int ci = i % 3; int cj = j % 3; if (ci == 2 || cj == 2) { out.print(0); } else { out.print(a[(ci << 1) + cj]); } } out.println(); } } public static void main(String[] args) { new Thread(null, new Runnable() { @Override public void run() { long start = System.currentTimeMillis(); String debug = args.length > 0 ? args[0] : null; if (debug != null) { try { is = java.nio.file.Files.newInputStream(java.nio.file.Paths.get(debug)); } catch (Exception e) { throw new RuntimeException(e); } } reader = new java.io.BufferedReader(new java.io.InputStreamReader(is), 32768); solve(); out.flush(); tr((System.currentTimeMillis() - start) + "ms"); } }, "", 64000000).start(); } private static java.io.InputStream is = System.in; private static java.io.PrintWriter out = new java.io.PrintWriter(System.out); private static java.util.StringTokenizer tokenizer = null; private static java.io.BufferedReader reader; public static String next() { while (tokenizer == null || !tokenizer.hasMoreTokens()) { try { tokenizer = new java.util.StringTokenizer(reader.readLine()); } catch (Exception e) { throw new RuntimeException(e); } } return tokenizer.nextToken(); } private static double nd() { return Double.parseDouble(next()); } private static long nl() { return Long.parseLong(next()); } private static int[] na(int n) { int[] a = new int[n]; for (int i = 0; i < n; i++) a[i] = ni(); return a; } private static char[] ns() { return next().toCharArray(); } private static long[] nal(int n) { long[] a = new long[n]; for (int i = 0; i < n; i++) a[i] = nl(); return a; } private static int[][] ntable(int n, int m) { int[][] table = new int[n][m]; for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { table[i][j] = ni(); } } return table; } private static int[][] nlist(int n, int m) { int[][] table = new int[m][n]; for (int i = 0; i < n; i++) { for (int j = 0; j < m; j++) { table[j][i] = ni(); } } return table; } private static int ni() { return Integer.parseInt(next()); } private static void tr(Object... o) { if (is != System.in) System.out.println(java.util.Arrays.deepToString(o)); } }