1: (0 1 5)

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

2: (3 5 21)

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

3: (2 11 4)

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

4: (1 19 5)

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