1: (0 3 11)

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

2: (1 20 4)

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

3: (3 15 5)

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

4: (9 16 13)

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