1: (0 1 5)

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

2: (3 5 21)

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

3: (2 10 4)

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

4: (1 18 5)

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