(0 19 16 15 4)(1 7 5)(2 17 13 8 6)(3 11 9)(10 14 12)(18 21 20)
ALLOWS (11/8)-SEQUENCE
1: (0 3 4)

(0)(1 7 5)(2 17 13 8 6)(3 19 16 15 4 11 9)(10 14 12)(18 21 20)
2: (4 11 15)

(0)(1 7 5)(2 17 13 8 6)(3 19 16 15 9)(4)(10 14 12)(11)(18 21 20)
3: (8 17 13)

(0)(1 7 5)(2 17 6)(3 19 16 15 9)(4)(8)(10 14 12)(11)(13)(18 21 20)
4: (10 14 12)

(0)(1 7 5)(2 17 6)(3 19 16 15 9)(4)(8)(10)(11)(12)(13)(14)(18 21 20)