Is this particular break down (https://www.reddit.com/r/sitcoms/comments/1f2ztgp/mash_eras/) the most accurate description of each era (https://www.reddit.com/r/sitcoms/comments/1f2ztgp/mash_eras/)?

Seasons 1, 2 and 3–

Trapper and Blake (https://www.reddit.com/r/mash/comments/8xgjsu/which_era_did_you_prefer_the_trapperburnshenry/) were there.


Seasons 4-11–

BJ and Potter were there.


Seasons 4, 5 and 6–

BJ clean-shaven.


Seasons 7-11–

BJ with a mustache.


Seasons 1-8–

Radar as the company clerk.


Seasons 8-11–

Radar goes home, Klinger is company clerk.