Late Proto-Nebulonic language

The Late Proto-Nebulonic language (LPN) is the form of the Nebulonic language between Proto-Nebulonic and Old Nebulonic.

Consonants
Late Proto-Nebulonic, like Proto-Nebulonic, had few consonant clusters. It was not until Old Nebulonic that more consonant clusters arose as the result of syncope. Late Proto-Nebulonic did have the geminates /pː/, /tː/, and /kː/, arising from the ejectives of Proto-Nebulonic, but only word-medially and not before a liquid or after /s/, in which case they simply become /p/, /t/, and /k/. The geminates are reconstructed due to...[I don't know. They behave differently in consonant gradation than single plosives? Consonant gradation only occurs at the end of a word though, unless I can come up with more environments for it. I'd like to.]

Consonant gradations were phonemicized in this period, after which the aspiration of voiceless plosives occurred before liquids. These aspirated plosives became fricatives in Old Nebulonic. As such, a Proto-Nebulonic /pʼl/ could become /pl/ [pʰl] in Late Proto-Nebulonic under certain circumstances, and then /ɸl/ in Old Nebulonic, ending up as /l̥/ in Modern Nebulonic.

Many plosives were lost from the Late Proto-Nebulonic period to the Old Nebulonic period in compensatory lengthening or by becoming glides in diphthongs: for example, LPN */ap/ > ON /a͡u̯/; LPN */at/ > ON /aː/; LPN */ak/ > ON /a͡i̯/.

Vowels
Late Proto-Nebulonic had no diphthongs; when two vowels were next to each other, they were always pronounced separately. In some cases, these did evolve into diphthongs in Old Nebulonic.

Phonotactics
Phonotactics are (C)V(C), as in PN, although with the existence of geminates between vowels, and consonant clusters consisting of a plosive and a liquid, or /s/ and a voiceless plosive.

Stress
Stress was trochaic as in PN.

Derivation
Like Proto-Nebulonic, Late Proto-Nebulonic preferred compounding and affixing for deriving words.