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

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

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

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

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