1: (0 1 15)

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

2: (4 15 21)

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

3: (3 18 8)

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

4: (2 19 17)

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