|Abstract:||In this paper, we show that Input-Reduplicant correspondence is a necessary ingredient of a full analysis of Leti reduplication. IR correspondence accounts for reduplication patterns that fail to be explained by Base-Reduplicant correspondence and also by earlier accounts in linear phonology in Leti. Input-Reduplicant correspondence was introduced in McCarthy & Prince 1995, and subsequently, some other languages have been reported that show IR correspondence. However, when we assume IR correspondence is a necessary set of constraints, we predict that not only FAITH is a relevant constraint, but in fact that the whole family of correspondence constraints exists. Whereas IDENT-IR constraints have frequently been invoked, MAX-IR, ANCHOR-BR, CONTIGUITY-BR and DEP-IR, have, to the best of our knowledge, not yet been reported. These constraints, we argue, play a role in Leti reduplication.