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