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

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

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

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

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