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

int main(void)
  {
    int n = 3;
    int x, y,z, bodka = 0, veta = 0;

    x = getchar();
    if (isspace(x)) {
                    while (isspace(x))
                    x = getchar();
                    }

    while (x != EOF) {
                      if (veta == n) {
                                      while (x == ' ')
                                        x = getchar();
                                      veta = 0;
                                      bodka = 0;
                                      putchar('\n');
                                      }

                      if (x == '.') {
                                      do {
                                         y = getchar();
                                         if (x != y){
                                                    ungetc(y,stdin);
                                                    veta++;
                                                    }
                                         else putchar(y);
                                         } while (x != '.');
                                     }

                      if (isspace(x)) {
                                       z = getchar();
                                       if (z == '.')
                                        veta++;
                                      // else ungetc(z,stdin);
                                       while(isspace(x))
                                        x = getchar();
                                       putchar(' ');
                                       }

                      putchar(x);
                      x = getchar();
                      }

  return EXIT_SUCCESS;
  }