Koepelasin uutta pelilautaani eilen.

From Lesson 442:Verb suffix ordering·Finnish

Breakdown of Koepelasin uutta pelilautaani eilen.

uusi
new
eilen
yesterday
koepelata
to playtest
pelilauta
game board

Questions & Answers about Koepelasin uutta pelilautaani eilen.

How does the suffix ordering work in the verb koepelasin?
In koepelasin, the structure is Stem (koepela-) + Past Tense marker (-si-) + Personal ending (-n). Because this is an active indicative verb, the Passive and Mood slots are empty. If we added enclitic particles, such as to ask "Did I playtest?", they would attach at the very end of this sequence: koepelasinko.
Does the noun "koe" affect the conjugation of "koepelata"?
Koepelata is a compound verb made from the noun koe (test/trial) and the verb pelata (to play). When conjugating compound verbs, only the final verb part changes. Pelata is a type 4 verb, so its stem pelaa- changes to pelasi- in the past tense, while the prefix koe- remains completely untouched.
Why are "uutta" and "pelilautaani" in the partitive case?
The verb pelata (and therefore its compound koepelata) is a partitive verb. This means it always requires its object to be in the partitive case, regardless of whether the action is fully completed. Because you are playtesting the board, both the adjective uusi (becoming uutta) and the noun pelilauta (becoming pelilautaa) take the partitive ending.
Does the suffix order on the noun "pelilautaani" follow strict rules like the verbs do?
Yes! Just like verbs, nouns have a strict morphotactic order: Stem + Number + Case + Possessive + Clitic. In pelilautaani, we see the Stem (pelilauta) + Partitive case (-a) + Possessive suffix (-ni for "my"). The case ending must always lock into place before the possessive suffix is attached.

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