1: (0 2 17)

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

2: (4 17 20)

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

3: (2 19 8)

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

4: (3 13 5)

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