1: (0 3 12)

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

2: (2 13 4)

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

3: (1 20 5)

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

4: (3 14 6)

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