//Ian Gavlick
//Problem 007
//String Word Reversal

#include <iostream>
#include <cstring>


using namespace std;

void reverse(int begin, int end, char str[]){
    char tmp;
    while(end>begin){
      tmp = str[begin];
      str[begin] = str[end];
      str[end] = tmp;
      begin++;
      end--;
    }
}

int main() {
  while(true){//For each line
    char line[200];
    if(cin.getline(line,200).eof())
      break;
    int s = 0;
    int e = strlen(line)-2;
    reverse(s,e,line);//Reverse entire string, except for end punctuation.
    e = 0;
    bool done = false;
    while(true){//For each word
      while(line[e] != ' '){//Parse through each character until the space
	e++;
	if(e > strlen(line)-2){
	  done = true;
	  break;
	}
      }
      e--;
      reverse(s,e,line);
      if(done)
	break;
      e+=2;
      s=e;
      if(line[e]==','){//If there's a , at the start of a word, move it to the end of the previous.
	line[e-1]=',';
	line[e]=' ';
      }
    }
    cout << line << endl;
  }
  return 0;
}