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

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

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

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

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