1: (0 1 15)

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

2: (4 15 20)

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

3: (7 21 16)

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

4: (2 13 5)

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