#include<iostream.h>

int verif(long n, int a)
{ while(n)
   { if(n%10>a) return 0;
     n=n/10;
   }
  return 1;
}

void main()
{  long n;
   int b;
   cin>>n;
   for(b=2;b<=10;b++)
     if(verif(n,b-1)==0) cout<<b<<" ";
}