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

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

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

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

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