public interface SwapStoreInterface {

    public void set(String[][] words);
    
    public int[] lineIndices(int line);
    
    public void setShifts(int line, int[][] shiftedIndices);

    public void swap(int i, int j, int k);

    public int compare(int i, int j, int k);

    public int length();

    public int lineLength(int i);

    public String get();

}