1: (3 7 20)

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

2: (1 9 5)

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

3: (0 16 2)

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

4: (4 11 20)

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