Case names help

My language Kosi is very agglutinative, and I don't want to use
postpositions. It has about twenty cases right now, but I don't have names
for the following case-meanings. Could someone please help me with their
scientific names?

above, over
according to
after, behind
against
around
before, in front of, prior to
between
compared to
down to (delative(?))
during
far from
in exchange for
instead of
near to
of (=containing, e.g. group of people)
outside of
pertaining to
similar to
under
up to

Thanks,

Trebor

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