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

#define MAXLINE 1024

int
get_line(char s[], int lim)
{
	int c, i;
	i = 0;
	while (--lim > 0 && (c = getchar()) != EOF && c != '\n') {
		s[i++] = c;
	}
	if (c == '\n') {
		s[i++] = c;
	}
	s[i] = '\0';
	return i;
}

int strindex(char s[], char t[])
{
	int i, j, k;
	for (i = 0; s[i] != '\0'; ++i) {
		for (j = i, k = 0; t[k] != '\0' && s[j] == t[k]; ++j, ++k);
		if (k > 0 && t[k] == '\0') {
			return i;
		}
	}
	return -1;
}

int strrindex(char s[], char t[])
{
	int i, j, k;
	for (i = strlen(s) - 1; i > 0; --i) {
		for (j = i, k = strlen(t) - 1; k > 0 && s[j] == t[k]; --j, --k);
		if (t[k] == t[0]) {
			return i;
		}
	}
	return -1;
}

int
main()
{
	char line[MAXLINE];
	char pattern[] = "ould";
	int found = 0;
	while (get_line(line, MAXLINE)) {
		if (strrindex(line, pattern) >= 0) {
			printf("%s", line);
			++found;
		}
	}
	return found;
}