There's a hypothesis which the distinction concerning fortis and lenis consonants is related to the contrast among voiceless and voiced consonants. With that, only essential details is memorized and shed following the future semester as it wasn’t interacted with in a method that pupils have the ability to remember it,” http://ricardorkewn.acidblog.net/23280588/a-simple-key-for-voice-lessons-in-ventura-unveiled