We’ve been using the L-PERIPH feature for e.g. second position clitics and generally to mean that something is in the left periphery of a clause. However how would this work with clause-embedding verbs:
(1) Ty znaesh, videl li Ivan Mashu? 2SG know.2SG see.PAST Q Ivan.NOM Masha.ACC "Do you know whether Ivan saw Masha?"
If binary phrases say that their second daughter is [ L-PERIPH - ] then, under the head-complement rule, a verb cannot take a clause with a second position clitic as its complement.
Does it perhaps indicate that the clitic is not in fact second position (is “second position” strictly with respect to the whole string-sentence rather than a clause?)