1: (1 5 10)

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

2: (4 16 6)

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

3: (9 20 11)

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

4: (3 12 10)

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