1: (0 5 6)

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

2: (3 11 5)

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

3: (2 19 4)

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

4: (3 16 6)

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