it could be any thing for example four letter verbs
**bach, back, bade, bail, bait, bake, bale, balk, ball, band, bang, bank, barb, bard, bare, barf, bark, base, bash, bask, bate, bawl, bead, beam, bean, bear, beat, beef, been, beep, bell, belt, bend, bent, bias, bide, biff, bike, bilk, bill, bind, bird, birl, birr, bite, bitt, blab, blat, bled, blew, blob, blot, blow, blub, blue, blur, boat, bode, body, boil, bolt, bomb, bond, bone, bong, bonk, book, boom, boot, bore, born, boss, bowl, brag, bray, **