1: (7 9 13)

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

2: (4 10 8)

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

3: (9 16 11)

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

4: (6 17 15)

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