int main()
{
   int a,b,c;
   for (a=1;a<4;a++)//?????a,b,c,??1???123??? 
   for (b=1;b<4;b++)
   {
      if (b==a) continue;//??????????????? 
      for (c=1;c<4;c++)
      {
         if ((c==b)||(c==a)) continue;
         if (((b>a)+(c==a)+a)!=3) continue;//?????????????????123????????3??????????? 
         if (((a>b)+(a>c)+b)!=3) continue;
         if (((c>b)+(b>a)+c)!=3) continue;
         if (a>b&&b>c) cout<<"CBA"<<endl; //??????????? 
         if (a>c&&c>b) cout<<"BCA"<<endl;
         if (b>a&&a>c) cout<<"CAB"<<endl;
         if (b>c&&c>a) cout<<"ACB"<<endl;
         if (c>b&&b>a) cout<<"ABC"<<endl;
         if (c>a&&a>b) cout<<"BAC"<<endl;
      } 
   }
  
   return 0;
}