cómo acortar url usando htaccess

Hola chicos, necesito acortar mi url usando htaccess como

antes de

www.mysite.com/obj/task/profile/id/1568/username

después

www.misitio.com/1568/usuario

o

antes de

www.mysite.com/obj/task/page/city/41280/pageId/22/clubs//Test%20town

después

www.mysite.com/41280/22/clubs//Test%20town

¿Cómo puedo lograr esto usando htaccess

mi archivo htaccess tiene esto

RewriteEngine on
Options +FollowSymlinks
Options -Indexes

RewriteCond %{REQUEST_URI} (.+)$  [NC]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
AddDefaultCharset utf-8
RewriteRule (.*) index.php 

RewriteEngine on
RewriteCond %{HTTP_HOST} ^test.com [NC]
RewriteRule ^(.*)$ http://www.test.com/$1 [L,R=301]  

Sugerido cambiado

<files .htaccess>
    order allow,deny
    deny from all
</files>
php_value memory_limit 170M

RewriteEngine on
Options +FollowSymlinks
Options -Indexes

RewriteCond %{REQUEST_URI} (.+)$  [NC]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
AddDefaultCharset utf-8
RewriteRule (.*) index.php


#RewriteCond %{HTTPS} !=on
#RewriteCond %{HTTP_HOST} !^$ [NC] 
#RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L] 

# THIS  RULE FOR FOR INACTIVE HTTPS
#RewriteCond %{HTTP_HOST} !^www.*$ [NC]
#RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L] 


RewriteEngine on
RewriteCond %{HTTP_HOST} ^mysite.com [NC]
RewriteRule ^(.*)$ http://www.mysite.com/$1 [L,R=301]  

Options +FollowSymLinks -MultiViews

RewriteEngine On
RewriteBase /

# from /obj/task/profile/id/1568/username
# to /1568/username
RewriteRule ^obj/task/profile/id(/.+)$/$1 [R=302,L,NC]

# from obj/task/page/city/41280/pageId/22/clubs//Test%20town
# to 41280/22/clubs//Test%20town
RewriteRule ^obj/task/page/city/([^/]+)/pageId(/.+?)/?$ /$1/$2 [R=302,L,NC,NE]

he visitadowww.mysite.com/obj/task/profile/id/1568/username Los enlaces aún no se acortan.

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