P>A => ALLUVIA, as in "alluvium. (ə-l 'vē-əm) Plural alluviums or alluvia. Sand, silt, clay, gravel, or other matter deposited by flowing water, as in a riverbed, floodplain, delta, or alluvial fan. Alluvium is generally considered a young deposit in terms of geologic time" from

Nah. We haven't sunk that far.

V --> F