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

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

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

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

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