rtcc rtcg rttp ruci ruct rugg rugi ruin ruit runc rung runi runn runo runt rupp rupt rurc ruri ruro rurp ruru ruti ruto rutt rutu ruun tccc tccu tcnn tcon tcpo tctc tgcc tgtc ticc tico tigi tigr tiit tiiu tinc ting tini tinn tino tint tinu tion tiop tiou tip- tipc tipi tipo tipp tipt tipu tiri tiro tirr tiru titc titi tito titp titt titu tncc tnut toci toco togo togr togt toit tong toni tonn tono tonu toon toor toot top- topi topo topp topt topu torc torg tori torn toro torp torr tort toru totc toti toto totr tott toug toui toun toup tour tout tpcp tpir tpon tppp tppr tptp tptr tput trcc tri- tric trig trin trio trip trit trng trno troc trog troi tron troo trop trot trou trpc trpg trpn trpp trtc trtr truc trug trun trut truu ttcn ttcp tton ttop tttt tucc tuco tugg tugu tuig tuin tuit tuiu tunc tung tuni tunn tuno tunu tuor tupi tupo tupu turc turg turi turn turo turp turr turt turu tuti tuto tutt tutu tuuo u-rp ucci uccp ucin ucio ucon ucrc ucut ugcc ugcg uggo uggt ugni ugri ugro ugur uguu uint uipi uirr uncc uncg unci unco uncp unct ungo ungp ungu uni- unic unii unin unio unir unit unni unno unon unop unpc unro unto unut uocc uor- upci upgo upic upin upnp upon upor uppc uppp uppu upri upto upup urci urgi urgu uric urin uriu urni uro- uroo urpo urri urun urup urur urut utin utor utri utti utto uttu utug uucp uuni uuno uuoc uuri uuuu