prog prol pron proo prop prot prri prtc prti prtp prtr ptcc ptcl ptol ptop pttc rccc rcgc rcic rcnl rcnr rcon rcpi rcpo rcpt rcrg rctc rctg rcti rgit rgtr ricc rico rict rigg rigi rigo riin rill rilo rilp ring rinn rino riol rion riot ripi ripl ripp ripr ript riri riti ritl rito ritt rlcg rlin rnco rncp rnin rnli rnnt rnot rntp rocc roco rogg rogi rogo roig roil roin roio roir roit roll rolo rolp rolt ronc rong roni rono ront roog rooi rool roon roop roor root ropo rorc rori roro rort rotc rotg roti rotl rotn roto rotr rott rpii rpon rppn rptn rrrr rtcc rtcg rtlt rttp tccc tcnn tcon tcpo tctc tgcc tgtc ticc tico tigi tigr tiit till tiln tilo tilr tilt tinc ting tini tinn tino tint tion tiop tip- tipc tipi tipo tipp tipt tiri tirl tiro tirr titc titi tito titp titt tlco tlgc tlli tlon tncc toci toco togo togr togt toil toit tol- toli toll tolo tolt tong toni tonn tono tool toon toor toot top- topi topo topp topt torc torg tori torn toro torp torr tort totc toti toto totr tott tpcp tpir tpol tpon tppp tppr tptp tptr trcc trcl tri- tric trig tril trin trio trip trit trng trno troc trog troi tron troo trop trot trpc trpg trpn trpp trtc trtr ttcn ttcp tton ttop tttt