1. That is, (a): monophthongs are preferred over diphthongs, which are in turn preferred over triphthongs.2. Vennemann’s PREFERENCE LAWS (1988: 2-3):Diachronic Maxim:Linguistic change on a given parameter does not affect a language structure as long as there exist structures in the language system that are less preferred in terms of the relevant preference law.Synchronic Maxim:A language system will in general not contain a structure on a given parameter without containing those structures constructible with the means of the system that are more preferred in terms of the relevant preference law.
1. That is, (a): monophthongs are preferred over diphthongs, which are in turn preferred over triphthongs.2. Vennemann’s PREFERENCE LAWS (1988: 2-3):Diachronic Maxim:Linguistic change on a given parameter does not affect a language structure as long as there exist structures in the language system that are less preferred in terms of the relevant preference law.Synchronic Maxim:A language system will in general not contain a structure on a given parameter without containing those structures constructible with the means of the system that are more preferred in terms of the relevant preference law.