1: (0 3 4)

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

2: (4 9 11)

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

3: (8 15 10)

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

4: (3 11 7)

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