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

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

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

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

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