[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]
a{2,3}
(abc|fg){2}
a*bc*
a(bcfe|bcdg)*
a(bcfe|bcdg|mkv)*
a(bcfe|bcdg|mkv){1,2}
a(bcfe|bcdg|mkv){2,4}
(bc|a)*
.*
a{1,3}
(b?|b{2})
(b*a)?
a+(ba+)*
((a|bc)*|d)
(ac|ads|a)*
(a+(ba+)*|ca*c)
((aad|ads|a)*|q)
[0-9]+[A-Z]*

ù
^\d$