forward
13, 14, 15, ________
16
15, 14, 13, ____
12
12, ____, 14
13
8, ___, ___, ___
9, 10, 11
Seventeen
17
18, 19, 20, _____
21
24, 23, 22, ____
21
34, ___, 36
35
24, ___, ___, ___
25, 26, 27
twenty
20
41, 42, 43, ____
44
48, 47, 46, ____
45
58, ___, 60
59
48, ___, ___, ___
49, 50, 51
twelve
12
71, 72, 73, _______
74
60, 59, 58, ____
57
71, __, 73
72
73, ___, ___, ___
74, 75, 76
eighteen
18
85, 86, 87, _______
88
98, 97, 96, ____
95
89, __, 91
90
97, ___, ___, ___
98, 99, 100
fifty
50