Tip 1: 2, 8, 13, 18, 21, 22  |  Extra: 6<br>Tip 2: 1, 2, 4, 6, 16, 19  |  Extra: 3<br>Tip 3: 6, 11, 12, 14, 16, 18  |  Extra: 2<br>Tip 4: 6, 11, 12, 23, 25, 27  |  Extra: 5<br>Tip 5: 4, 5, 6, 15, 17, 20  |  Extra: 6<br>