1: (0 1 15)

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

2: (4 15 21)

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

3: (2 18 14)

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

4: (1 20 15)

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