1: (1 4 8)

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

2: (4 9 20)

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

3: (0 10 7)

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

4: (3 11 5)

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