1: (1 5 10)

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

2: (4 13 6)

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

3: (9 17 11)

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

4: (3 12 10)

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