1: (0 3 4)

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

2: (4 13 21)

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

3: (2 19 6)

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

4: (1 20 18)

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