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