lucca lucea lucee lucha luche luchu lucre lucur lulab lulal lulec luleh lulla lulle lulua luluc lulul lurch lurer lurue ra-ra raaba raabe raahe rabab rabac rabah rabal rabba rabbe rabeh rabel rabha rable rabul racah racal racch race- raceh racer racha rache racle raela rahab rahal raheb rahul ralla ralle rarae rareb raree rarer rauch rccar reace reach reale rear- reaue rebab rebar rebbe rebec rebel reber rebra recal recca recce recea reche recue recur reece reech reere reerh rehab rehal rehar rehau reher rehua rehue relau relee rella relue rere- reree reuar reuel reuer reule rharb rheae rrhea ruach ruaha ruala rubab rubba rubee rubel ruber ruble rubra rucer ruche rucul rueca ruehl ruele ruell ruere ruhab ruhla ruhle ruhub ruler rural rurec ruule u-cee uacrr ubach ubble uber- uccel uccle ucell uchar uchee ucheh uchuu uclue uh-ee uh-uh uhaul uhecr uhhuh uhler uhura uhuru ulala ulalu ulbra ulcer ulche ullah ullal ullar ullca ullur ulula ululu uluru uraba urach urare urbar urcel urea- ureae ureal urech urelu urera urlar urrea urubu uruce urucu uuuuu