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