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