1: (0 3 5)

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

2: (2 8 4)

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

3: (1 19 5)

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

4: (3 14 7)

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