1: (0 8 13)

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

2: (9 13 20)

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

3: (6 14 12)

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

4: (4 10 7)

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