1: (0 1 9)

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

2: (4 9 20)

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

3: (2 18 5)

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

4: (17 21 19)

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