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

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

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

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

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