1 ) Move 1 to the middle
2 ) Move 2 to the right
3 ) Move 1 to the right (on top of 2)
4 ) Move 3 to the middle
5 ) Move 1 to the left
6 ) Move 2 to the middle (on top of 3)
7 ) Move 1 to the middle (on top of 2 and 3)
8 ) Move 4 to the right
9 ) Move 1 to the right
10 ) Move 2 to the left
11 ) Move 1 to the left (on top of 2)
12 ) Move 3 to the right (on top of 4)
13 ) Move 1 to the middle
14 ) Move 2 to the right
15 ) Move 1 to the right