1: (0 3 17)

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

2: (1 20 10)

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

3: (2 15 4)

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

4: (3 19 5)

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