1: (0 2 16)

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

2: (1 20 3)

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

3: (2 18 4)

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

4: (9 19 17)

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