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