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

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

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

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

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