1. 0. 1.
 4
 1 1 2 3 7 11 10 9 6
 2 3 4 5 8 13 12 11 7
 3 9 10 11 15 19 18 17 14
 4 11 12 13 16 21 20 19 15
 21
 1 0. 0.
 2 0.5 0.
 3 1. 0.
 4 1.5 0.
 5 2. 0.
 6 0. 0.5
 7 1. 0.5
 8 2. 0.5
 9 0. 1.
 10 0.5 1.
 11 1. 1.
 12 1.5 1.
 13 2. 1.
 14 0. 1.5
 15 1. 1.5
 16 2. 1.5
 17 0. 2.
 18 0.5 2.
 19 1. 2.
 20 1.5 2.
 21 2. 2.
 13
 1 1 0.
 17 1 0.
 2 1 0.
 18 1 0.3826834323650898
 3 1 0.
 19 1 0.7071067811865475
 4 1 0.
 20 1 0.9238795325112867
 5 1 0.
 21 1 1.
 6 1 0.
 9 1 0.
 14 1 0.