<?php return [ [ 6, 8, ], [ 7, 9, ], [ 8, 10, ], [ 9, 12, ], [ 10, 13, ], [ 11, 14, ], [ 12, 16, ], [ 14, 18, ], [ 16, 21, ], [ 18, 24, ], [ 20, 26, ], [ 22, 29, ], [ 24, 32, ], [ 36, 48, ], [ 48, 64, ], [ 60, 80, ], ];