Pergamon rhymes with:
bangemann, bingaman, hagaman, klingaman, waugaman, alaskamen, antihistamine, bangemann, benjamin, bingaman, branaman, cameraman, cinnamon, eisaman, ellemann, fadiman, geesaman, hagaman, hannaman, havemann, heckaman, kinnaman, kinnamon, klingaman, lienemann, lindaman, lindemann, mcmanaman, mcmanamon, mcmenamin, mcmennamin, ottoman, prillaman, regimen, salamon, salomon, sassaman, schueneman, schuenemann, solaman, solomon, specimen, telamon, thiamin, vandeman, vitamin, waugaman, weiseman
Pergamon sounds like:
paragon, paraguayan, parchman, parisian, parisienne, parkin, parkison, parkman, parsimony, parson, pearson, peerson, pehrson, peirson, peragine, percussion, perignon, perkin, perricone, persian, person, persona, personae, persson, persuasion, persyn, perugina, perugini, perzigian, pharisaism, pherson, phrygian, pieraccini, pierson, powergen, precession, precision, prejean, pressman, presson, presume, prezzano, prism, prison, prizm, procaccini, procaine, procassini, procession, prochnow, progeny, prussian, purgason, pyroxene