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