Each set of ten 3-letter words can become five 7-letter words by combining them and placing a certain letter in the middle. The same letter will be used to make the words in each set; each set uses a different letter. Don’t change the order of the letters.
-1. bit, cat, gig, imp, led, log, rot, she, ted the
-2. age, aid, ail, air, ark, bar, ear, ill, rum, saw
-3. and, arm, cat, ode, off, ole, out, pin, pus, wit
-4. ben, bug, fir, fit, for, kin, lay, man, ram, red
-5. ale, ash, ell, ess, gun, hay, hog, ink, ire, pro
-6. age, alb, ass, ate, fig, men, per, red, sal, sit
-7. age, ail, boo, cot, cur, hog, leg, rum, tan, war
-8. ant, ate, hoe, hum, lea, man, off, own, pen, rum