ab, a, abs - Answers away, from
ad - Answers to, toward
ambi - Answers both
ante - Answers before, in front of
circum - Answers around
con - Answers with, together
contra, contro - Answers against
de - Answers down, off
dis - Answers apart
en - Answers in, into
ex, e - Answers out
extra, extro - Answers outside, beyond
in - Answers in, onto
infra - Answers below, beneath
inter - Answers between, among
intro - Answers within
non - Answers not
ob - Answers toward, against
per - Answers through
post - Answers after
pre - Answers before, in front of
pro - Answers forward, in front of
re, red - Answers back, again
retro - Answers backward