RewriteEngine On

RewriteRule    ^logo\-([0-9]+)x([0-9]+)\.rle$ index.php?width=$1&height=$2    [L]
RewriteRule    ^logo\-([0-9]+)x([0-9]+)\.png$ index.php?width=$1&height=$2&preview=png    [L]
RewriteRule    ^logo\-([0-9]+)x([0-9]+)\.bmp$ index.php?width=$1&height=$2&preview=bmp    [L]
RewriteRule    ^logo\-([0-9]+)x([0-9]+)\.jpg$ index.php?width=$1&height=$2&preview=jpg    [L]

RewriteRule (.*?)indexx\.php/*(.*) /$1$2 [R=301,NE,L]