1: (0 3 15)

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

2: (2 18 4)

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

3: (1 19 17)

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

4: (8 20 15)

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