Background: As a common intermediate stage, it is possible to reconstruct depalatalized affricates: *c, *dz. (This coincides with the state of affairs in the neighboring Nuristani languages.) A further complication however concerns the consonant clusters *ćw and *dźw:
Question: What other elements of early Iranian languages problematize the east-west division?
Answer:<extra_id_0>.
<extra_id_0> *ćw and *dźw<extra_id_1>