1: (1 6 10)

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

2: (0 8 2)

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

3: (4 9 7)

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

4: (6 12 13)

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