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