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