{1,2,7,8}\{1, 2, 7, 8\}{1,2,7,8}
{1,7,4}\{1, 7, 4\}{1,7,4}
{1,2,7,14}\{1, 2, 7, 14\} {1,2,7,14}
{1,2,4,6}\{1, 2, 4, 6\}{1,2,4,6}