1: (0 4 12)

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

2: (5 12 15)

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

3: (1 20 7)

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

4: (3 9 6)

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