1: (5 7 15)

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

2: (4 8 6)

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

3: (3 10 7)

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

4: (1 13 9)

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