rchb rcic rcle rcpi rebb rebe rebu recc rece rech reci recp recr recu reeb reel reep rehb rehe rehi reii reil reir reiu relb rele rell relp repe repi repl repp repr repu rere reri reru reue reul reup reuu rhce rhcp rheb rhee rhib rhli rhue rib- ribe ribu ricc rice rich riel riep rier rieu rile rill rilp rilu ripe ripi ripl ripp ripr rire riri riue rlee rleu rpii rrle rrrr rubb rube rubi rubp rubu ruce ruch ruci ruel ruer ruhe ruhh ruhi ruhl ruhr rule rull rupe rupp rurc rure ruri rurp ruru u-ie u-rp ubbe ubbi uber ubic ubii ubir uble ubli ubpc ucbc ucci uccp ucel uche uchi ucil ucpb ucph ucrc ueir uele ueli uell uepi uhcl uher uhle uhuh uhup uile uipi uirr ulbc ulcc ulch uleb ulee ulic ulie ulle ulli ullr ulul upbe upci upic upie uplb uppc uppe uppp uppu upri upup urbe urbi urch urci ure- ureh urib uric urie uriu urle urre urrh urri urup urur uucp uulu uuri uuuu