2 syllables:
birren, burren, caren, cerin, ceron, chirren, ciren, curran, curren, der in, dzeren, dzeron, gurren, her in, jaren, jarin, kloran, murren, naren, perin, pteron, seron, sharen, stir in, vw sharan, were in, buren, burin, curan, cure in, duren, fluorin, furin, gouren, gurin, juron, kuran, moore in, murin, nurun, nur in, pure in, purin, spuren, sturen, suren, sure in, surin, tour in, turin, uhrin

3 syllables:
concur in, deguerin, kudrun, occur in, recur in, refer in, transfer in, xenurine, asuran, chafurin, desflurane, eburin, endure in, enflurane, honduran, lunzuran, macruran, mature in, maturin, purpurin, secure in, tamburin, teflurane, tervuren, vanvooren, van buren

4 syllables:
al-kafirun, anomuran, aventurin, brachyuran, bruny surin, calcineurin, duran duran, flavopurpurin, holothurin, isoflurane, nabunturan, resazurin, sevoflurane

5 syllables:
anthrapurpurin, carolus-duran, martin van buren, methoxyflurane, naragasooran

2 syllables:
warren, baron, loren, aaron, varan, myron, byron, barren, sharon, purine, foreign, sporran, heron, siren, karen, charon, boren, charen, gearan, lauren, nauran, terrine

3 syllables:
environ, night heron, macaroon, andorran, acheron, aleurone, anuran, claforan, empirin, imuran, moneran, moneron, susteren, zairean

4 syllables:
estuarine, great blue heron, rose of sharon, poriferan, agropyron, ecuadoran, genus siren, great white heron, rabbit warren, snowy heron

5 syllables:
little blue heron, nilo-saharan, photoblepharon