What is one less?
16
What is one more?
13
What is one more?
19
What is one more?
12
What is one less?
17
What is one less?
12
What is one more?
14
What is one less?
14
What is one more?
15
What is one less?
13
What is one less?
18
What is one more?
16
What is one less?
11
What is one more?
18
What is one more?
17
What is one more?
11
What is one less?
15
What is one more?
20
What is one less?
9
What is one less?
10