1: (3 7 11)

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

2: (6 14 8)

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

3: (4 5 11)

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

4: (10 15 12)

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