1: (3 4 15)

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

2: (4 9 11)

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

3: (8 13 10)

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

4: (3 11 5)

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