1: (3 6 15)

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

2: (2 11 4)

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

3: (0 7 5)

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

4: (1 15 10)

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