1: (0 3 18)

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

2: (1 20 6)

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

3: (5 18 8)

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

4: (2 16 4)

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