1: (0 3 6)

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

2: (2 8 4)

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

3: (1 19 6)

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

4: (3 12 7)

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