sürdürürdün

Sürdürürdün is a Turkish verb form. It is the second-person singular conditional past tense of the verb "sürdürmek." "Sürdürmek" itself means to continue, to maintain, to sustain, or to carry on. The conditional past tense in Turkish is used to express a hypothetical situation in the past that did not happen or whose outcome is uncertain, often implying a consequence that would have followed.

Therefore, "sürdürürdün" translates to "you would have continued" or "you would have maintained." It suggests that a past action or state of being would have persisted if a certain condition had been met. For example, "Eğer çalışsaydın, başarılı olurdun" (If you had studied, you would have been successful). In this sentence, "olurdun" is the conditional past of "olmak" (to be/become). If "sürdürmek" were involved, it might appear in a sentence like, "Eğer izin verseydi, görevi sürdürürdün" (If he had given permission, you would have continued the task).

The structure of the verb is formed by taking the stem "sürdür-", adding the aorist suffix "-ür", the conditional suffix "-se", and finally the past tense suffix for the second person singular "-ydin" (which contracts to "-dün"). This grammatical construction is a key element in expressing nuanced hypothetical past scenarios in the Turkish language.