Wikipedia wrote:albeit, ancient, atheism, beige, being, caffeine, casein, cleidoic, codeine, conscience, counterfeit, deficient, (deficiencies), deify, deity, deign, deil, disseize, dreidel, efficient, eider, eight, either, feign, feint, feisty, financier, foreign, forfeit, freight, geisha, glacier, gleization, gneiss, greige, greisen, heifer, heigh-ho, height, heinous, heir, heist, inveigle, kaleidoscope, keister, leisure, leitmotiv, monteith, neigh, neighbor, neither, obeisance, omniscient, onomatopoeia, peignoir, phenolphthalein, phthalein, prescient, proficient, protein, reign, reimburse, rein, reinforce, reinstate, reveille, Rotweiller, science, seeing, seiche, seidel, seine, seismic, seize, seizin, sheik, sheila, society, sovereign, specie, species, sufficient, surfeit, surveillance, teiid, their, veil, vein, weight, weir, weird
That rule is really a bad one to base things on. It would be better to just learn how to spell.