Look this is example rewrite apache


RewriteRule ^[A-Z]{3}[a-z]{2}[0-9]{4}[a-z]{3}[0-9]{4}[A-Z]{2}[a-z]{1}[0-9]{1}/(.+)$ files/$1
3 characters A-Z
2 characters a-z
4characters 0-9
u know?
and last code is
ADDad0000asa0000AAp0
QJNqq0821sxz4230QAp0