1: (0 5 15)

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

2: (1 19 7)

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

3: (4 9 6)

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

4: (3 20 15)

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