niur nlcc nlcf nlec nler nlic nm-e nmff nmic nmmc nmml nmrc nmri nnmc nnnn nrem nren nrfc nric nrml nrrc nrrl nuce nuci nucu nuee nuel nuer nuff nuim nuin nule nuli null nume numi numm numu nunc nune nunn nurc nure nuri nurl nurn nurr nuru rccc rcfc rcic rcle rcnl rcnr recc rece reci recm recr recu reef reel reem reen refe reff refi refl refn refr refu reif reii reil reim rein reir reiu rele rell relm reme remi remn rene reni renn renu rere reri reru reue reuf reul reuu rfef rfem rffc rffl rfic ricc rice rief riel riem rien rier rieu rife riff rifu riif riin rile rill rilu rime rimi rimm rimu rine rinf rinn rire riri riue rlee rlef rleu rlif rlin rlml rmif rmll rnie rnin rnli rrfc rrif rrle rrmc rrrr rrum rrun ruce ruci ruel ruen ruer rufc rufe ruff ruif ruin rule rull rume rumi ruml rumm runc rune runf runi runn rurc rure ruri ruru ruun u-ie ucci ucel ucil ucin ucmc ucrc uein ueir uele ueli uell ufcu ufel ufer uffe uile uiml uirr ulcc ulee ulen ulfe ulic ulie ulim ulle ulli ullr ulme ulmi ulmu ulne ulul ulum umec umer umff umri uncc unce uncf unci uncl unec unee unef unen uner uni- unic unie unif unii unin unir unle unlf unmc unmr unne unni unrf unum urci ure- urfe urff urfi uric urie urif urim urin uriu urle urmi urne urni urre urri urum urun urur uuen uulu uuni uuri uuuu