#include <stdio.h>
#include <string.h>

void main()
{
    char line[80];
    char rec1[40], rec2[40], prev[40]="";
    int i,j, nbr=0;

    while( gets( line ) != NULL )
       {
	 i=0;
	 while(line[i] != ' ') { rec1[i] = line[i]; i++;}
	 rec1[i] = '\0';
	 /* Da li su tekuca i prethodna rec anagrami */
	 if( strcmp( prev, rec1 ) == 0 )
	    { i++;
	      nbr += 1;
	      j=0;
	      while(line[i] != '\0') { rec2[j] = line[i]; i++; j++; }
	      rec2[j] = '\0';
	      printf("%s ", rec2 );
	     }
	 else /* prev != rec1 */
	     { strcpy( prev, rec1 );
	       printf("\n");
	       i++;
	       j=0;
	       while(line[i] != '\0') { rec2[j] = line[i]; i++; j++; }
	       rec2[j] = '\0';
	       printf("%s %s ", rec1, rec2 );
	     }


       }
}