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