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