riti rits ritt rkss rkts rrrr rsbi rscc rscs rsee rsis rsre rsts rtcc rtce rtee rtei rtes rtss rtts s-ib s-ic s-ii sbbs sbcc sbcs sbct sber sbic sbrk sbse sbsi sbst sbtc sbtk scbi sccc scce sccs scct scec scee scer scet sci- scic scie scir scis scit sck- scr- scrc scre scri scrs scsc scsi scsr scst sctc sctr scts se-c se-e se-i se-k se-s se-t sebe sebi sebs sebt sec- secc sece seck secr secs sect seeb seec seek seer sees seet seie seii seik seir seis seit seke seki sekk sekt serb serc sere seri serk serr sers sert sesc sese sesi sess sest set- setc sete seti sets sett sibc sibe sibi sibs sicc sice sici sick sics siec siek sier sies siik siit sike siki sikr siks sirc sire siri sirk sirr sirs sirt sisc sise sisi sisk siss sist sit- sitc site siti sits sitt skee skei sker skes sket skic skie skik skir skis skit skrt skss srbc srcc srct sreb srec sres srib sris srtr ssbr sscc ssce ssci sscs ssec ssee sses sset ssis ssit ssrc ssri ssrs sssb sssc sssi ssss sstb sstc ssts stbc stbs stcc stcs stec stee stek ster stes stet stib stic stie stik stir stis stit stks strc stre stri strk strs stsi stss sttc sttr tbbs tbcb tbcc tbce tbit tbrb tbst tcbs tccc tctc tcts teck tecr tecs tect teec teek teer tees teet teic teie teir teis teke ter- terc tere teri terk terr ters tesc tese tess test tete teti tetr tets tett tibi tibs ticc tice tick tics tie- tiee tiei tier ties tiet tiit tike tiki tirb tire tiri tirr tirs tisb tise tisi tiss tist titc tite titi tits titt tkts trcc tre- trec tree trei trek tres tret tri- trib tric trie trik tris trit trsi trst trtc trte trtr tsbc tscc tsec tses tset tsis tsks tsse tssi tssr tsst tstc tsts ttbb tter ttss tttt