There were mutations:
m > M
n > N
p b > B
t d > D
k g > G
s r > j
h > ŋ
There were two plurals: the old one, indicated by mutation of the initial consonant, which was no longer productive and had shifted to a collective-esque meaning, e.g. hötëma, 'star' versus ŋötëma, 'night sky', and a new plural (and a dual that patterns with it), formed by suffixation.
Verb fronting in intransitive sentences to indicate the subject did not do so volitionally (essentially fluid-S indicated via word order).
Partivity in verbs: most verbs are bipartite, for instance kumuka, to be red (adjectives are verbs in Proto-Trengic). When conjugated, for instance in the third person singular, kumuka becomes kunümuka (It is red). However, there is a small, closed class of unipartite verbs that have the infixes prefixed.
Agreement infixes don’t distinguish clusivity or the dual number (the plural is used instead). The set is rä, gi, nü in the singular and jä, Gi, Nü in the plural. Note that gi and Gi mutate following consonants.
Tense infixes occur before agreement infixes. SVO word order and head-initial.
Sing Dual Plur
1i - rägi jä
1x rä räbu räka
2 gi gibu gika
3 nü nübu nüka
m > M
n > N
p b > B
t d > D
k g > G
s r > j
h > ŋ
There were two plurals: the old one, indicated by mutation of the initial consonant, which was no longer productive and had shifted to a collective-esque meaning, e.g. hötëma, 'star' versus ŋötëma, 'night sky', and a new plural (and a dual that patterns with it), formed by suffixation.
Verb fronting in intransitive sentences to indicate the subject did not do so volitionally (essentially fluid-S indicated via word order).
Partivity in verbs: most verbs are bipartite, for instance kumuka, to be red (adjectives are verbs in Proto-Trengic). When conjugated, for instance in the third person singular, kumuka becomes kunümuka (It is red). However, there is a small, closed class of unipartite verbs that have the infixes prefixed.
Agreement infixes don’t distinguish clusivity or the dual number (the plural is used instead). The set is rä, gi, nü in the singular and jä, Gi, Nü in the plural. Note that gi and Gi mutate following consonants.
Tense infixes occur before agreement infixes. SVO word order and head-initial.
Sing Dual Plur
1i - rägi jä
1x rä räbu räka
2 gi gibu gika
3 nü nübu nüka