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

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

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

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

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