#include<stdio.h>
int main()
{
 int a;
 scanf("%d",&a);
 if(a=2,3,4,5,6,7,8,9 && a<=100 && a>=0);
 {
     switch(a)
     {
     case 2:
     printf("[A,B,C]");
     break;
     case 3:
     printf("[D,E,F]");
     break;
     case 4:
     printf("[G,H,I]");
     break;
     case 5:
     printf("[J,K,L]");
     break;
     case 6:
     printf("[M,N,O]");
     break;
     case 7:
     printf("[P,Q,R,S]");
     break;
     case 8:
     printf("[T,U,V]");
     break;
     case 9:
     printf("[W,X,Y,Z]");
     break;
     }
     
 }
 else
 {
 printf("Invalid input");
 }
 return 0;
}