front 1 pro- | back 1 before, forward, in favor of |
front 2 dis- | back 2 not, apart, away |
front 3 inter- | back 3 between or among |
front 4 con- (co-, com-, col-, cor) | back 4 together, connect, or with |
front 5 geo- | back 5 earth, ground, or soil |
front 6 trans- | back 6 across, beyond, or to change |
front 7 ad- | back 7 to or toward |
front 8 in-, im-, il-, ir- | back 8 in or not |
front 9 ex-, e-, ec-, ef- | back 9 out or away from |