The final stem is the ŠD-stem, a form mostly attested only in poetic texts, and whose meaning is usually identical to either the Š-stem or the D-stem of the same verb. It is formed with the Š prefix (like the Š-stem) in addition to a doubled-middle radical (like the D-stem).
the final stem is the šd-stem a form mostly attested only in poetic texts and whose meaning is usually identical to either the š-stem or the d-stem of the same verb it is formed with the š prefix (like the š-stem) in addition to a doubled-middle radical (like the d-stem)