Figured out Disclosure Day alien speech

In a recent trailer at the end, we hear the beginning of the alien speech. During this, it spells out Disclosure Day. It spells it with the last syllable of the last word first, then the first syllable of the first word second. The last word closest syllable to the last third, then the closest syllable to the front last. This is language expressed as a sort of algorithm in this way. We know the algorithm now, and so to decode a sentence likely requires this breakdown.

The sounds themselves may closely align with the letter combinations shown to create syllable to alien syllable / letter translation. With DIS CLOS SURE DAY syllables as a baseline we may be able to decode the alien message with this 4 pronged translator key alone to infer upon the rest of the message.