The letters can have more than one meaning
TD is touring,diesel/station wagon.T is the body style,not the turbocharger.
SD is sedan,diesel.
CD is coupe,diesel.
K can also signify "kurz",or short.
Einsprizung is fuel injection.
A lot of confusion is created when different meanings are attached to the same letter..."L" can stand either for light or long,"C" could be either an '80s coupe or a newer C-class....the same letter can have an entirely different significance depending on the car it's on.