1: (0 1 15)

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

2: (4 15 21)

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

3: (3 18 13)

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

4: (2 19 17)

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