Sum 1
B = [, 4, 5, 6, 7, 12, 15, 10, ]
B = [, 4, 5, 7, 9, 12, 15, 10, ]
B = [, 5, 7, 9, 12, 15, 18, ]
B = [, 5, 8, 9, 12, 15, 18, ]