Completely Removing PostgreSQL

In my Debian 12, I have removed the following apps from my system by
using the following commands:

/*sudo apt-*//*get*//*–purge *//*remove*//*postgresql postgresql*//*-15*//*postgresql-client-common postgresql-common postgresql-contrib*//**//*sudo apt-*//*get*//*–purge *//*remove*//*postgresql postgresql*//*-12*//*postgresql-client-common postgresql-common postgresql-contrib*/

and then used*sudo**apt autoremove* to remove whatever was left dangling
there. However, after using *dpkg -l | grep postgres* command, I get this?

**

*dpkg -l | grep postgres*
rc  postgresql-12 12.15-1.pgdg120+1                  amd64        The
World's Most Advanced Open Source Relational Database
rc  postgresql-15 15.3-1.pgdg120+1                   amd64        The
World's Most Advanced Open Source Relational Database
rc  postgresql-client-common 250.pgdg120+1                     
all          manager for multiple PostgreSQL client versions
rc  postgresql-common 250.pgdg120+1                      all         
PostgreSQL database-cluster manager
rc  postgresql-pljava-common 1.6.4-2.pgdg120+1                 
all          Java procedural language for PostgreSQL, config files

-----------------------------

The above clearly shows that *dpkg*, and therefore my Debian 12, still
recognize the existence of these packages. When trying to remove them
*apt remove,* it fails to find them.

How can I completely remove PostgreSQL-xx.xx from my system?

Thanks!