public class Versuch {

    static String s = "NtGaeX, hgt3eYht R ?aduSoZcch7!b";
    static int i;

    public static void main (String[] args) {

	for (i=0; i < s.length(); i++) {
       	    if ((i % 3 == 0) || (i % 7 == 0)) {
		System.out.print(s.substring(i,i+1));
                
            }
        }
        System.out.println();
    }
}