1: (0 3 8)

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

2: (2 21 7)

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

3: (1 5 8)

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

4: (4 12 6)

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