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