1: (7 15 20)

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

2: (0 2 15)

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

3: (1 17 4)

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

4: (6 19 8)

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