1: (3 12 13)

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

2: (6 14 12)

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

3: (1 7 4)

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

4: (6 15 13)

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