1: (3 7 12)

(0 20 7)(1 4 2)(3 18 15 12 5)(6 13 10)(8 17 14 11 9)(16 21 19)

2: (6 13 10)

(0 20 7)(1 4 2)(3 18 15 12 5)(6)(8 17 14 11 9)(10)(13)(16 21 19)

3: (5 15 12)

(0 20 7)(1 4 2)(3 18 15)(5)(6)(8 17 14 11 9)(10)(12)(13)(16 21 19)

4: (11 17 14)

(0 20 7)(1 4 2)(3 18 15)(5)(6)(8 17 9)(10)(11)(12)(13)(14)(16 21 19)