1: (0 3 10)

(0)(1 20 15)(2 19 4)(3 12 10 8 5)(6 13 9)(7 17 16)(11 18 14)

2: (2 19 4)

(0)(1 20 15)(2)(3 12 10 8 5)(4)(6 13 9)(7 17 16)(11 18 14)(19)

3: (1 20 15)

(0)(1)(2)(3 12 10 8 5)(4)(6 13 9)(7 17 16)(11 18 14)(15)(19)(20)

4: (3 12 5)

(0)(1)(2)(3)(4)(5 10 8)(6 13 9)(7 17 16)(11 18 14)(12)(15)(19)(20)