#include <stdio.h>

int fbi ( char avion[], int od )
{   
    if ( avion[od] == 'F' && avion[od + 1] == 'B' && avion[od + 2] == 'I' )
       return 1;
   
    else return 0;
}

main()
{     
      
      char avion[5][11];
      int i, j, ind = 0;
      static int polje [5];
      
      for ( i = 0; i < 5; ++i )
            scanf (  "%s", avion[i] );
      
      for ( i = 0; i < 5; ++i ) {
            j = 0;
            
            while ( avion[i][j] != '\0' ) {
                    j++;
                    if ( fbi(avion[i], j) ) {
                       //printf ("%d", i + 1 );
		       polje[i] = 1;
                       ind = 1;
                       break;
                       }
                        
            }
      }
      
      if ( ind == 0 )
         printf ( "UTEKO" );
      else if ( ind == 1 )
	  {	for ( i = 0; i < 5; ++i)
			if ( polje[i] == 1 )
				printf ( "%d ", i + 1 );
		}     
	
}