#include<iostream>
#include<fstream>
#include<algorithm>
#include<cstring>
#include<vector>
#include<string>
#include<queue>
#include<cstdlib>
#include<ctime>
#include<map>
#define in cin
#define out cout
#define FOR(i, a, b) for(int i = a; i <= b; ++i)
using namespace std;
typedef long long ll;
int main(){
    #ifndef ONLINE_JUDGE
    ifstream in("test.in");
    ofstream out("test.out");
    #endif
    char s[1000],p[1000];
    in.getline(s+1,1000);
    int n=strlen(s+1),P=0;
    FOR(i,1,n){
        if(s[i]!='.' && s[i]!='-'){
            if(s[i]==',') p[++P]=' ';
            p[++P]=s[i];
        }
    }
    p[++P]='\0';
    out<<p+1<<'\n';
    return 0;
}