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

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

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

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

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