1: (1 11 20)

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

2: (1 5 8)

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

3: (4 10 6)

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

4: (0 9 2)

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