1: (0 3 7)

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

2: (2 20 4)

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

3: (3 9 5)

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

4: (1 18 7)

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