1: (0 4 5)

(0)(1 20 2)(3 21 19 16 6)(4 18 13 12 5 9 7)(8 14 10)(11 17 15)

2: (5 9 12)

(0)(1 20 2)(3 21 19 16 6)(4 18 13 12 7)(5)(8 14 10)(9)(11 17 15)

3: (8 14 10)

(0)(1 20 2)(3 21 19 16 6)(4 18 13 12 7)(5)(8)(9)(10)(11 17 15)(14)

4: (4 12 7)

(0)(1 20 2)(3 21 19 16 6)(4)(5)(7)(8)(9)(10)(11 17 15)(12 18 13)(14)