Words that are often confused.

Group 1: advice, advise, practice, practise, aloud, allowed, heard, herd, past, passed, who’s, whose.

Group 2: device, devise, advice, advise, practice, practise, cereal, serial, aisle, isle, father, farther, affect, effect.

Group 3: licence, license, practice, practise, desert, dessert, stationary, stationery, draft, draught, principle, principal, eliminate, illuminate, eligible, illegible.