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