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

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

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

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

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