1: (0 3 17)

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

2: (1 20 5)

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

3: (2 15 4)

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

4: (3 19 6)

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