sürmelewçü

/ syrmelewtʃy /

Cases

SingularPluralWhen to use it
nominative sürmelewçü the one who planes sürmelewçüle the one who planeses the plain dictionary form — the doer of the sentence
genitive sürmelewçünü the one who planes' sürmelewçüleni the one who planeses' the owner — whose it is
accusative sürmelewçünü the one who planes (as the object) sürmelewçüleni the one who planeses (as the object) a specific, known object — whom or what
dative sürmelewçüge to the one who planes sürmelewçülege to the one who planeses direction or recipient — to where, to whom
locative sürmelewçüde at / in the one who planes sürmelewçülede at / in the one who planeses where it is; also having — mende bar, "I have it"
ablative sürmelewçüden from the one who planes sürmelewçüleden from the one who planeses where it comes from; also "than" when comparing

The endings are the same ones the pronouns wear — that page explains when each case is used.

With an owner

One ownedSeveral owned
my sürmelewçüm my one who planes sürmelewçülerim my one who planeses
your sürmelewçüŋ your one who planes sürmelewçüleriŋ your one who planeses
his / her sürmelewçüsü his / her one who planes sürmelewçüleri his / her one who planeses
our sürmelewçübüz our one who planes sürmelewçüleribiz our one who planeses
you all's sürmelewçügüz you all's one who planes sürmelewçülerigiz you all's one who planeses
their sürmelewçüleri their one who planes sürmelewçüleri their one who planeses

The overlap in the last rows is real, not a mistake: sürmelewçüleri can mean "his / her one who planeses", "their one who planes", or "their one who planeses" — context decides.