1: (0 3 7)

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

2: (1 19 4)

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

3: (2 17 5)

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

4: (7 16 21)

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