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

#define MAX 20
#define CNT 10

int main(void) {
	// your code goes here
	char str[CNT][MAX+1];
	int i;
	for(i=0;i<CNT;i++)scanf("%s",str[i]);
	qsort(str,CNT,MAX+1,strcmp);
	for(i=0;i<CNT;i++)printf("%s\n",str[i]);
	return 0;
}