1: (2 9 15)

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

2: (7 19 9)

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

3: (0 8 6)

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

4: (1 20 4)

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