From: Miguel Carrasquer
Message: 14042
Date: 2002-07-17
>I believe I answered this some years ago. The root 'drink' is indeedA question: why does the accent shift to the reduplication syllable in
>*peH3y- and alternates accordingly, e.g., 3sg aor. *poH3-t (Skt. á-pa:t),
>caus. *poH3y-éye-ti (pa:yáyati) with retention of -y- before a vowel and
>loss in the environment VH_C# (and VH_CC). To go with the root aorist
>there was a reduplicated present, of which píbati etc. is properly the
>refashioned subjunctive. The old injunctive would be 3sg *pi-péH3y-t >
>*pi-póH3-t, 3pl *pé-pH3y-nt > *pé-pH3-n.t (the last form with y > zero in
>CH_CC, processed before full syllabification of the sonant, as general
>for these rules).