1: (6 10 20)

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

2: (4 11 7)

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

3: (1 16 10)

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

4: (0 17 2)

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