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

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

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

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

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