Here is what I have in my .htaccess
# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
# add a trailing slash to /wp-admin
RewriteRule ^([_0-9a-zA-Z-]+/)?wp-admin$ $1wp-admin/ [R=301,L]
RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(wp-(content|admin|includes).*) tazzabe.us/$2 [L]
RewriteRule ^([_0-9a-zA-Z-]+/)?(.*\.php)$ tazzabe.us/$2 [L]
RewriteRule . index.php [L]
</IfModule>
# END WordPress
# BEGIN wtwp_cache
# END wtwp_cache
# BEGIN wtwp_security
# END wtwp_security
