2 syllables:
ayo, day o, deyo, deyoe, guayo, hey ho, hey oh, jae ho, keio, maio, mayeaux, mayo, may owe, meyo, pbaoe, pei ho, phaeo, teo, they owe, wei ho, cleo, clio, deo, dnd cio, gcrio, gee ho, geo, keo, keogh, keough, leo, meo, neo, pieux, pleio, pleio-, qty oh, reo, rheo-, rio, rr eo, seo, seow, theo, theo-, theow, three o, ti au, tni au, v aux, we owe, yeo, zdfneo

3 syllables:
aguayo, buteo, cacao, centeio, cetewayo, cetshwayo, chiclayo, correo, corteo, criteo, demayo, deseo, eieio, elaio, fideo, galkayo, gytheio, hideo, huancayo, judeo, judeo-, lacayo, maceio, maceo, malayo, mateo, matteo, moncayo, mondeo, nadeo, norteo, ohayo, okjeo, palaeo, palaeo-, pareo, pelayo, posteo, shigeo, siphayo, sujeo, t.k.o, takeo, addio, aliyot, anzio, areo-, audio-, binyeo, branchio-, buyeo, c.e.o, campillo, castillo, castio, chorio-, coolio, empleo, georgio, goryeo, guajillo, gungnyeo, haenyeo, indeo, ingeo, labio-, luteo, luteo-, mckeough, mikio, oblio, osseo, pestillo, pitillo, raptio, rodillo, rufio, sodio-, spokeo, spongio-, struthio, tokio, toshio, trujillo, ungnyeo, vario-, vidrio, yoshio, youngkio, yukio, zedillo

4 syllables:
amodeo, bulawayo, dingiswayo, ghirlandaio, inkigayo, kimigayo, madadayo, mindanao, mukilteo, papagayo, sandungueo, subbuteo, timoteo, zapateo, zutomayo, binario, carajillo, colosseo, dangaioh, enantio-, europeo, geneseo, gomashio, homoio-, kinesio, kinesio-, kuroshio, molinillo, riley keough, russolillo, tomatillo

5 syllables:
bam adebayo, bartolomeo, charaideo, cihuateteo, creme de cacao, montevideo, realvideo, sariosiyo

6 syllables:
direct-to-video, kamiyonanayo, vittoria yeo, conduplicatio

2 syllables:
trio

3 syllables:
paseo