1: (0 2 15)

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

2: (1 20 3)

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

3: (2 17 4)

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

4: (14 18 16)

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