1: (0 1 2)

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

2: (1 4 18)

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

3: (2 20 15)

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

4: (13 19 17)

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