1: (0 4 9)

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

2: (2 20 5)

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

3: (4 13 7)

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

4: (8 18 10)

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