1: (4 11 18)

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

2: (3 15 5)

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

3: (10 16 12)

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

4: (2 13 11)

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