Accentology
Sub-areas of accentology include Germanic accentology , Balto-Slavic accentology , Indo-European accentology , and Japanese accentology . 
<triplet> Germanic <subj> Indo-European <obj> subclass of <triplet> Balto-Slavic <subj> Indo-European <obj> subclass of <triplet> Indo-European <subj> Balto-Slavic <obj> has part