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

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

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

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

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