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

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

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

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

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