Regular for htacceess?

Question

htaccess

Hi all!
They changed the linking on the site, but I never had a relationship with the adjustments, not my forte :(
help plz make the
right
syntax post_id
and c /*username*/blog/*post_id*
on ub/post_id
with asterisks - I tried to compose user variables
, it turned out something like this, but it doesn't work :(
RewriteCond %{REQUEST_URI} !^/([^/] *)/cars/([^/]*)/blog/([^/]*)
RewriteRule ^(.*)$ /cb/$3 [L]
RewriteCond %{REQUEST_URI} !^/([^/]* )blog/([^/]*)
RewriteRule ^(.*)$ /ub/$2 [L]
poke your nose plz