1: (4 8 12)

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

2: (1 10 7)

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

3: (3 12 6)

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

4: (9 13 11)

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