1: (0 4 15)

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

2: (1 19 6)

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

3: (3 8 5)

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

4: (2 20 15)

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