#include <stdio.h>
#include <ctype.h>
#define MAXLINELEN 101
#define MAXWORDLEN 21

int nextWord (char *, int, char *);

int main ( ) {
	char line[MAXLINELEN];
	char word[MAXWORDLEN];
	int pos;
	
	while (getline (line, MAXLINELEN-1)) {
		pos = 0;
		while  ((pos = nextWord (line, pos, word)) != -1) {
			printf ("%s\n", word);
		}
	}
	return 0;
}