1: (0 6 11)

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

2: (1 20 8)

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

3: (4 10 7)

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

4: (2 6 5)

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