1: (0 3 15)

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

2: (2 18 4)

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

3: (13 19 17)

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

4: (3 16 5)

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