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

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

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

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

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