1: (1 5 11)

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

2: (4 12 10)

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

3: (3 19 11)

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

4: (0 17 2)

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