1: (4 8 11)

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

2: (1 8 6)

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

3: (7 15 9)

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

4: (10 17 12)

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