If "poch" is meant to be billy-goat, then the "p" for "b" was often found in the Alsace and Bavaria/Tirol. There were other pockets where they used it. I've kept track of this (ongoing). When "x" was substituted for "ch" it was usually in scholarly circles where they learned Greek as well as Latin.
I would have to look it up, but for a couple of years, I made a record of manuscripts where I found "nim" instead of "nimm" (with the dropped-m) and if I remember correctly, they were mostly from NW Germany but some might have been in the south. "Gaf" for "gave" was specific to a narrow time-period and in lowland German-speaking areas in the northwest and was much less frequent than "nim" or "p" for "b" (and "a" for "e").
I would have to look it up, but for a couple of years, I made a record of manuscripts where I found "nim" instead of "nimm" (with the dropped-m) and if I remember correctly, they were mostly from NW Germany but some might have been in the south. "Gaf" for "gave" was specific to a narrow time-period and in lowland German-speaking areas in the northwest and was much less frequent than "nim" or "p" for "b" (and "a" for "e").
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