niru nirv niur niva nivr nlab nlcc nlic nlra nlrb nnnn nrab nrca nric nrlb nrna nrrc nrrl nuan nuba nubc nubi nubl nuca nuci nucu nuin nuli null nuna nunc nunn nura nurc nuri nurl nurn nurr nuru nurv nuva nvcc nvir nvla raab raan raba rabb rabi rabl rabu rac- raca racc raci racu racv raia raic raii rail rain rair raiu rala ralb rall rana ranc rani rann rara rarb rari raua raub rauc raul raun rava ravi rbbb rbbr rbcl rcac rcbc rccb rccc rcic rcnl rcnr rcuv rcvr riaa riab riai rial rian riau rib- riba ribu rica ricc riia riin rila rill rilu rina rinn riri riva rlab rlin rlua rnai rnal rnbr rnin rnli rrna rrrr rrun ruan ruba rubb rubi rubu ruca ruci ruin rula rull runa runc runi runn rura rurc ruri ruru ruun ruvi ruvu rv-c rvca uabc uaca uair uarc uaru uaua ubac ubal ubar ubba ubbi ubic ubii ubir ubla ubli ubra ucai ucal ucan ucar ucav ucbc ucca ucci ucil ucin ucla ucrc ucua uica uira uirr ulaa ulai ulan ular ulbc ulcc ulic ulla ulli ullr ulna ulua ulul ulva ulvi unaa unac unai unal unan unar unau unca uncc unci uncl uni- unia unic unii unin unir univ unlv unna unni unra urac urai ural uran urau urba urbi urca urci uria urib uric urin uriu urla urna urni urra urri urun urur urva uulu uuni uuri uuuu uv-a uv-b uv-c uvaa uvac uval uvic uvri uvvu vaal vaan vaar vaca vaia vail vain vair vala vali vall valn valu vana vanc vani vann vanu vara vari varn varr varu vava vbcc vcal vcbi vcci vial vian viar viau vic- vica vici viii vila vili vill vilu vina vinc vini vinu vira virb virc viri virl virr viru viva vivi vlab vlai vlan vlba vlcc vlci vlli vnav vnir vrac vrai vran vrav vrba vrbl vrci vria vril vrin vrnn vual vuca vuir vula vull vuln vurb vvvv