Āc, an oak, gives us oak, acorn, Acton.
Bac-an, to bake: baker, baxter (female baker), batch.
Ban-a, a slayer: bane, baneful, henbane.
Bēat-an, to stroke: beat, bat, battle, beetle, batter.
Beorg-an, to shelter: bury, burrow, burgh, harbour, harbinger.
Bēr-an, to bear: bear, birth, bairn, breed, brood, bier, barrow, brother, bird.
Bēt-an, to make good: better, best, boot (to boot).
Bind-an, to bind: band, bond, bondage, bundle.
Bit, to bite: bit, beetle, bait, bitter.
Blāw-an, to puff: bladder, blain, blast, blister, blot, bloat.