Grammatical case
Like conjugations of verbs and general spelling, grammatical cases are not used consistently in OL. What follows is a first exploration.
Equivalents to Old Greek
nominative/accusative
τα τέκνα (the children) — THA ÀFTER.KVMANDA (the descendants)
genitive
της νύκτες (of the night) — THES NACHTIS (at night)
dative
notes
Plurals ending with -ON might be related (how?) to Old Greek -ων, for example BYLDON, ÁGON (images, eyes) that exist as varieties of BYLDA, ÁGA and BYLDUM, ÁGUM. Plurals ending with -UN seem to be varieties of -ON, e.g. ÁGUN, DÉLUN.
Plurals ending with -UM seem to have been used more for genitives and datives than for nominatives and accusatives, though (as with most spelling and grammar) very inconsistently.