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

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

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

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

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