Verbs

It is apparent that Indo-Aryan verbs were based in stems consisting of a single syllable, that is a combination of a simple consonant with a coupling vowel that could couple the verb stem with a conjugational ending.

One example is the verb root ska-, meaning "to cut", which carries with it the full implications of "to cut or mold, to shape, create, form or scoop", such as can be read here.

The ending -t and -p are merely noun-making suffixes, which lend a particular material or definite quality to the initial stem; -t is indicative of something somehow having been enacted by ska-,  such as skatos (shadow, shaped), while -p is used for more definite material objects like skapos (shape, vessel). Yet they are both very similar, as we see here.

It should therefore be known that the nouns of the Indo-European language originated from a proto-linguistic expression of active forms of existence, that is, verb-like constructions indicating a certain way of being and a certain nature of existence as emanated by the described thing. The study of such exact sound meanings will be gone over later. Thus, nouns did come from verbs, since verbs were initially stems from which suffixes could be attached to give more definitive forms; these roots were composed of sounds indicating a certain nature (a mode of existence), and therefore a certain active behavior consequent of it's existence. The world was defined by the way in which objects affected each other; based on understanding relationships between things. That was how something was defined; by how it reacted to other things. In the same way these things were described by initially verb-type words.

The roots are all directly descended from the emanations of these particular sounds, such as the sk sound formed as the root ska-, or st being sta- (to stand), and so on.

An example of conjugation:
sta-, to stand, present tense
1st Person       staimi
2nd Person      staisi
3rd Person       staiti

Conversely, there is a variety of forms we can reconstruct for representing these old verbs. One discrepancy is that the vowel coupled to these sounds is relative. It is most certainly a more open vowel, but it ranges between an a, an o and an e in representation. Final decisions in representing these will be done from a careful aesthetic study.