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

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

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

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

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