1: (0 1 15)

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

2: (4 15 21)

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

3: (2 20 5)

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

4: (3 16 13)

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