1: (1 4 11)

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

2: (2 14 5)

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

3: (1 17 3)

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

4: (9 15 13)

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