1: (0 3 4)

(0)(1 5 3 19 9 6 4)(2 18 16 14 7)(8 12 10)(11 15 13)(17 21 20)

2: (1 5 9)

(0)(1 6 4)(2 18 16 14 7)(3 19 9)(5)(8 12 10)(11 15 13)(17 21 20)

3: (2 18 7)

(0)(1 6 4)(2)(3 19 9)(5)(7 16 14)(8 12 10)(11 15 13)(17 21 20)(18)

4: (1 6 4)

(0)(1)(2)(3 19 9)(4)(5)(6)(7 16 14)(8 12 10)(11 15 13)(17 21 20)(18)