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

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

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

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

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