eeeee eeler elele eleo- ellel eller elloe ellul eloee elole eloor elore eloro elulu eluru eorre erere eroor erore errol error euell euler eurel euro- eurre leell leere leleu lelle lerer leuro loler lollo lolol looer loore lorel loreo lorer lorre louer loule loure louro lulle lulul lurer lurue oerel oerle oleo- olere olleo oller ollur olour oo-er ooooo orell oreo- orere orero oroer orolu oruro oullo ouoro oure- ourol reere relee rello relue rere- reree reuel reuer reule ro-ro roell roero roleo rolle rollo rooer roole roore rooue rorer rouer roule roull roure ruele ruell ruere ruler rullo ruule ullur ululu uluru uouee urelu ureo- urour uuuuu