#include <bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define R cin>>
#define ll long long
#define ln cout<<'\n'
#define in(a) insert(a)
#define pb(a) push_back(a)
#define pd(a) printf("%.10f\n",a)
#define mem(a) memset(a,0,sizeof(a))
#define all(c) (c).begin(),(c).end()
#define iter(c) __typeof((c).begin())
#define rrep(i,n) for(ll i=(ll)(n)-1;i>=0;i--)
#define REP(i,m,n) for(ll i=(ll)(m);i<(ll)(n);i++)
#define rep(i,n) REP(i,0,n)
#define tr(it,c) for(iter(c) it=(c).begin();it!=(c).end();it++)
ll check(ll n,ll m,ll x,ll y){return x>=0&&x<n&&y>=0&&y<m;}void pr(){ln;}
template<class A,class...B>void pr(const A &a,const B&...b){cout<<a<<(sizeof...(b)?" ":"");pr(b...);}
template<class A>void PR(A a,ll n){rep(i,n)cout<<(i?" ":"")<<a[i];ln;}
const ll MAX=1e9+7,MAXL=1LL<<61,dx[8]={-1,0,1,0,-1,-1,1,1},dy[8]={0,1,0,-1,-1,1,1,-1};
typedef pair<ll,ll> P;

void Main() {
  ll n,m,x;
  cin >> m >> n >> x;
  ll d[3][3],y=x;
  mem(d);
  rep(i,2) {
    rep(j,2) {
      ll c=min(9LL,y);
      d[i][j]=c;
      y-=c;
    }
  }
  if(y) {
    pr(-1);
    return;
  }
  rep(k1,3) {
    rep(k2,3) {
      ll a[n][m];
      rep(i,n)rep(j,m) a[i][j]=d[(i+k1)%3][(j+k2)%3];
      rep(i,n) {
        rep(j,m) {
          ll c=0;
          REP(ii,i-1,i+2) {
            REP(jj,j-1,j+2) {
              if(check(n,m,ii,jj)) c+=a[ii][jj];
            }
          }
          if(c!=x) goto next;
        }
      }
      rep(i,n) {
        rep(j,m) cout << a[i][j];
        ln;
      }
      return;
    next:;
    }
  }
  pr(-1);
}

int main(){ios::sync_with_stdio(0);cin.tie(0);Main();return 0;}