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