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

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

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

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

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