1: (0 3 17)

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

2: (1 20 7)

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

3: (5 17 8)

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

4: (2 16 4)

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