1: (0 2 15)

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

2: (1 20 6)

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

3: (11 21 18)

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

4: (4 15 17)

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