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