import java.util.*;

public class ClientsList {
	
	private class LastFirstComparer implements Comparator<String>{

		//@Override
		public int compare(String a, String b) {
			String[] ar = a.split(" ");
			String[] br = b.split(" ");
			
			int lcomp = ar[1].compareTo(br[1]);
			if (lcomp != 0){
				return lcomp;
			}
			
			return ar[0].compareTo(br[0]);
		}
		
	}
	
	public String[] dataCleanup(String[] names){
		for(int k=0; k < names.length; k++){
			String[] ar = names[k].split(", ");
			if (ar.length > 1){
				names[k] = ar[1] + " "	 + ar[0];
			}
		}
		Arrays.sort(names, new LastFirstComparer());
		return names;
	}
}