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

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

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

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

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