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

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

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

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

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