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

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

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

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

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