Proto-Jeipehoi

Proto-Jeipehoi was a language spoken in the Jeipehoi region of Sagadim around 2500 EV. The language was denoted by its distinctive lack of inflections for plurals, cases, tenses and grammatical persons, and words required unique markers to denote such things, traits which were passed onto its daughter languages. Unlike Proto-Sagadimi, which employed triliteral roots, and similar to Proto-Eimistimeleis, Proto-Jeipehoi used distinct phonemes to denote meanings. The main difference in the root systems of Proto-Jeipehoi and Proto-Eimistimeleis was that the former used roots to primarily denote nouns, from which the verbs were attained through stem-forming (the few types of inflection found in the language), while the latter used roots to mean verbs, primarily, and then formed nouns through inflection and ablaut.

Phonological Constraints
Roots in Proto-Jeipehoi were limited to simple phonemes by the language's phonological constraints. The phonological constraint dictated that words had to be limited to CVC(V), CDC(V), V and D. This constraint could be written as (C)V/D(C)(V), and allowed for sounds such as yaipai, won, u and oi, while prohibiting sounds like byemd. The exception to this rule was in the form of (p)(N)(p)V-, which dicated that p could begin a root if it preceded or succeeded a nasal consonant and the root terminated in a vowel.

Morphology
In Proto-Jeipehoi,  root+stem  was the only construction that allowed for inflections. There were no inflections to denote grammatical tense, case, person and quantity, with explicit phonemes being used instead to highlight these. A construction to denote past tense would be formed as  time-root+suffix , with the stem and time being separated by a hyphen (within the language, this was represented as a short haitus between lexemes).

In compound words, when a voiceless stop preceded a voiced stop, the latter was reduced in a process of assimilation. For example, in the compound yaipai + baŋ, the voiced labial stop (b) changed to a voiceless labial stop (p), forming yaipaipaŋ (translated as shrine or burial ground). In later forms of the proto-language, if the initial root of a compound ended in a diphthong, the diphthong was reduced into a vowel, such that *yaipaipaŋ became *yaipepaŋ. A second process of assimilation, assuming the form  F2 > F1 when D1(C)F1(C)F2 , resulted in yaipepeŋ being formed. In other terms, this meant that a front vowel was assimilated by another front vowel when the initial front vowel preceded and succeeded a consonant and was near a corresponding diphthong and the assimilated vowel.

The opposite rule applied for fricatives, which underwent a process of dissimilation when forming compound words. An example is in the compound of the roots sai- + saipe-, in which the s of saipe- changed into the voiced x, forming *saixaipe and then saixepe, meaning crust of bread.

Nouns were formed from their roots through a process of ablaut. Any vowel or diphthong in Proto-Jeipehoi could be changed to form a noun related to the root. An example of this ablaut can be found in ŋai, meaning mouth (as in, the mouth of a cave), derived from the root ŋoi-. The Proto-Jeipehoi noun for language was čiin, from the root čoin-. Some nouns were formed from the construction of  root+suffix , though this was generally reserved for infinitives and verbal nouns.

Verbs were not formed as separate lexemes from their nouns, and were instead created by the formation of a compound using a time and the compound of a root and the verbal stem (which was (i)/(a)/(o)ŋ). An infinitive was merely a verb without a stated time. An example of which would be baŋaŋ, meaning to die. The idea of the bird died would be displayed as ɦoi-baŋaŋ maip, and the idea of the bird will die would be represented as wu-baŋaŋ maip.