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

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

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

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

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