1: (1 6 15)

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

2: (3 18 11)

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

3: (14 21 16)

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

4: (1 13 4)

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