1: (7 11 15)

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

2: (9 17 13)

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

3: (6 10 8)

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

4: (1 7 12)

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