1: (6 9 12)

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

2: (9 14 20)

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

3: (5 17 7)

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

4: (13 18 16)

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