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

#define MAX 128

// tipareste liniile care contin cuvantul ce[] de sine statator
// limitare: desparte liniile mai lungi de MAX

int main(void)
{ 
  char lin[MAX];
  char ce[] = "lin";
  unsigned len = strlen(ce);
  while (fgets(lin, MAX, stdin))
    for (char *p = lin; p = strstr(p, ce); p += len)  // cat timp gasim ce[]
      if ((p == lin || isspace(p[-1])) &&
	  (p[len] == '\0' || isspace(p[len]))) {  // daca e independent
	fputs(lin, stdout);	// scrie si nu mai cauta
	break;
      }
  return 0;
}