1: (0 3 7)

(0)(1 19 4)(2 17 5)(3 21 7 15 11)(6 16 14 10 8)(9 13 12)(18 22 20)

2: (1 19 4)

(0)(1)(2 17 5)(3 21 7 15 11)(4)(6 16 14 10 8)(9 13 12)(18 22 20)(19)

3: (2 17 5)

(0)(1)(2)(3 21 7 15 11)(4)(5)(6 16 14 10 8)(9 13 12)(17)(18 22 20)(19)

4: (7 15 21)

(0)(1)(2)(3 21 11)(4)(5)(6 16 14 10 8)(7)(9 13 12)(15)(17)(18 22 20)(19)