1: (0 1 15)

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

2: (4 15 21)

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

3: (2 18 7)

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

4: (1 20 15)

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