With respect to pitch accent, the negative form of いる{LH} is いない{LHH}, while the negative form of ある{HL} is ない{HL}. But what is the pitch of their shortened versions when used in てる / てない constructions? More specifically:
What is the pitch of "る" and "ない" when they are used as shortened versions of いる, ある, いない, and ない, respectively (in a てる/てない construction)?
Does the pitch of ”る” and "ない" in てる/てない change depending upon whether it is shortening いる{LH} or ある{HL}? Or is it the same pitches in either case?