#include <iostream>
#include <cstring>
using namespace std;

int main()
{
    char c[500],*p,sep[]="abcdefghijklmnopqrstuvxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
    cin>>c;
    p=strtok(c,sep);
    while(p!=NULL){
        cout<<p<<'\n';
        p=strtok(NULL,sep);
    }
    return 0;
}