1: (0 2 10)

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

2: (1 19 3)

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

3: (2 13 4)

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

4: (8 17 11)

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