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

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

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

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

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