1: (0 3 7)

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

2: (6 9 16)

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

3: (1 20 15)

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

4: (0 4 2)

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