| siêm, | siês, | siet,[16] | —— | —— | sient. |
| sim, | sîs, | sit,[17] | sîmus, | sitis, | sint. |
| erîm, | erîs, | erit, | erîmus, | erîtis, | erint. |
If we add the other termination to a verbal base ending in certain vowels, we get the Sanskrit bhara-iyam, contracted to bháreyam:—
| bharêyam, | bharês, | bharêt, | bharêma, | bharêta, | bharêyus. |
in Greek φέρο-ιμι:—
| φέρο-ιμι, | φέρο-ις, | φέρο-ι, | φέρο-ιμεν, | φέρο-ιτε, | φέρο-ιεν. |
in Latin fere-im, changed to ferem, used in the sense of a future, but replaced[18] in the first person by feram, the subjunctive of the present:—
| feram, | ferês, | feret, | ferêmus, | ferêtis, | ferent. |
Perfect Subjunctive:—
| tul-erîm, | tul-erîs, | tul-erit, | tul-erimus, | tul-eritis,[19] | tul-erint. |
Here we have clearly the same auxiliary verb, i or ya, again, and we are driven to admit that what we now call an optative or potential mood, was originally a kind of future, formed by ya, to go, very much like the French je vais dire, I am going to say, I shall say, or like the Zulu