1: (8 11 15)

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

2: (9 16 14)

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

3: (13 15 17)

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

4: (4 12 10)

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