1: (1 4 15)

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

2: (4 7 12)

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

3: (6 14 8)

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

4: (1 12 5)

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