1 = 7  8 = 2 + 3 + 4 + 5 2 3 4 5 6 = 1 + 26 7 = 9 + 31 8 = 21 + 33 9 = 10 + 13 + 15 + 18 + 20 10 11 12 13 14 15 16 17 18 19 20 21 = 22 + 26 + 27 + 29 22 = 23 + 24 + 25 23 24 25 26 27 28 29 30 = 9  21 31 32