import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;

public class SuperSet {

        public static int[] numberArray;
        public static int[] newNumberArray;
        public static int start;
        public static int end;
        public static boolean[] used;

        public static void main(String[] args) throws IOException {
            BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

            numberArray = Arrays.stream(reader.readLine().split(", "))
                    .mapToInt(Integer::parseInt)
                    .toArray();


            start = 0;
            end = numberArray.length;

            for (int i = 1; i <= end; i++) {
                newNumberArray = new int[i];
                combination(0, start, i);
            }


        }

        private static void combination(int index, int start, int limit) {
            if (index == limit) {
                printArray();
                return;
            }
            for (int i = start; i < end; i++) {
                newNumberArray[index] = numberArray[i];
                combination(index + 1, i + 1, limit);
            }
        }


        private static void printArray() {
            for (int n : newNumberArray) {
                System.out.print(n + " ");
            }
            System.out.println();
        }
    }