1: (0 1 8)

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

2: (4 8 20)

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

3: (2 13 5)

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

4: (1 18 8)

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