1: (0 1 15)

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

2: (4 15 21)

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

3: (2 16 13)

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

4: (1 20 15)

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