# Take an URI of the form http://example.com/contact/form/contact/fLastname/
# ...rewrite it as the following: http://example.com/contact/form/index.php?contact=fLastname
RewriteEngine On
RewriteBase /
RewriteRule ^/?(contact)/([A-Z_@\.]+)/?$ contact/form/index\.php?$1=$2 [NC,PT,L]