1: (6 12 16)

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

2: (4 15 8)

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

3: (9 17 14)

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

4: (7 12 10)

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