2 syllables:
beaven, beavin, cleven, de vinne, even, eve in, geven, jeevan, keven, kievan, kleven, leave in, leven, neven, pleven, se7en, sleven, stephen, steven, yeven, zeven

3 syllables:
4seven, achieve in, believe in, breakeven, break even, enleven, genevan, get even, kesteven, perceive in, porthleven, receive in, uneven

4 syllables:
disbelieve in, even-steven, getting even, kinlochleven, overleaven, ultraseven, unbereaven

5 syllables:
chicago seven

7 syllables:
the magnificent seven

2 syllables:
question, stetson, caisson, lessen, essen, cession, session, resin, deafen, hessian, cresson, lesson, freshen, grecian, heathen, leeson, lesion, reason, season, treason, wesun

3 syllables:
expression, procession, progression, obsession, profession, possession, impression, recession, jam session, secession, discretion, repression, oppression, concession, precession, egression, succession, gum resin, suppression, confession, fluorescein, compression, digression, transgression, bull session, aggression, accession, regression, depression, accretion, adhesion, artesian, cohesion, completion, concretion, deletion, depletion, dioecian, dry season, elysian, excretion, high treason, mauritian, partizan, phoenician, preseason, repletion, salishan, secretion, tahitian, tunisian, unreason, venetian, with reason

4 syllables:
great depression, indiscretion, self-expression, special session, object lesson, prepossession, supersession, nonaggression, decompression, intercession, dispossession, retrogression, repossession, age of reason, austronesian, baseball season, fishing season, football season, for some reason, growing season, hockey season, holstein-friesian, hunting season, indonesian, in due season, pass completion, polynesian, rainy season, salt depletion, silly season, social season, subartesian, within reason, with more reason

5 syllables:
synthetic resin, manic depression, melamine resin, delicatessen, epoxy resin, facial expression, acrylic resin, phenolic resin, basketball season, elizabethan, mucous secretion, with greater reason

6 syllables:
executive session, harmonic progression, reactive depression, multiple regression, clinical depression, immunosuppression, linear regression, neurotic depression, psychotic depression, exhibition season, internal secretion, theatrical season

7 syllables:
agitated depression, arithmetic progression, geometric progression, malayo-polynesian

8 syllables:
war of the spanish succession

9 syllables:
war of the austrian succession