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