a-a a-b a-t aaa aab aag aaj aao aar aas aat aau ab- aba abb abg abj abo abr abs abt abu ag- aga agb agg agj ago agr ags agt agu aja ajb ajj ajo ajr ajs ajt aju aoa aob aog aoj aoo aor aos aot aou ar- ara arb arg arj aro arr ars art aru as- asa asb asg asj aso asr ass ast asu at- ata atb atg ato atr ats att atu au- aua aub aug auj auo aur aus aut b-u baa bab bag baj bao bar bas bat bau bba bbb bbg bbo bbr bbs bbt bbu bga bgb bgg bgo bgr bgs bgt bgu bja bjg bjj bjr bjs bjt bju boa bob bog boj boo bor bos bot bou bra brb brg brj bro brr brs brt bru bsa bsb bsg bsj bso bsr bss bst bsu bta btb btg bto btr bts btt btu bua bub bug buj buo bur bus but buu gaa gab gag gaj gao gar gas gat gau gba gbg gbj gbo gbr gbs gbt gbu gga ggb ggg ggj ggo ggr ggs ggt ggu gja gjg gjr gjt goa gob gog goo gor gos got gou gra grb grg grj gro grr grs grt gru gsa gsb gsg gsj gso gsr gss gst gsu gta gtb gtg gto gtr gts gtt gtu gu- gua gub gug guj guo gur gus gut guu jaa jab jag jaj jao jar jas jat jau jba jbg jbj jbo jbr jbs jbt jbu jga jgb jgo jgr jgs jgt jgu jja jjb jjg jjj jjr jjs jju joa job jog joj joo jor jos jot jou jra jrb jrg jro jrr jrs jrt jsa jsb jsg jsj jso jsr jss jst jsu jta jtb jtg jtr jts jtt jtu jub jug juo jur jus jut oaa oab oag oaj oao oar oas oat oau ob- oba obb obg obj obo obr obs obt obu oga ogg ogo ogs ogt oja ojb ojo ojs oju oo- ooa oob oog ooo oor oos oot or- ora orb org oro orr ors ort oru os- osa osb osg osj oso osr oss ost osu ot- ota otb otg oto otr ots ott otu ou- oua ouo our ous out ra- raa rab rag raj rao rar ras rat rau rba rbb rbg rbo rbr rbs rbt rbu rga rgb rgg rgo rgr rgs rgt rja rjg rjr roa rob rog roj roo ror ros rot rou rra rrb rrg rrr rrs rrt rru rsa rsb rsg rsj rso rsr rss rst rsu rta rtb rtg rtj rto rtr rts rtt rtu rua rub rug ruo rur rus rut ruu saa sab sag saj sao sar sas sat sau sba sbb sbg sbj sbo sbr sbs sbt sbu sga sgb sgg sgo sgr sgs sgt sgu sja sjb sjj sjr sjs sjt sju soa sob sog soj soo sor sos sot sou sr- sra srb srg srj sro srr srs srt ss- ssa ssb ssg ssj sso ssr sss sst ssu sta stb stg stj sto str sts stt stu sua sub sug suo sur sus sut suu taa tab tag taj tao tar tas tat tau tba tbb tbg tbj tbo tbr tbs tbt tbu tga tgb tgg tgo tgr tgs tgt tgu tjo tjr tjs tju to- toa tob tog toj too tor tos tot tou tra trb trg tro trr trs trt tru tsa tsb tsg tsj tso tsr tss tst tsu tta ttb ttg tto ttr tts ttt ttu tua tub tug tuj tuo tur tus tut tuu ua- uaa uab uag uaj uao uar uas uat uau uba ubb ubg ubo ubr ubs ubt ubu uga ugb ugg ugo ugr ugs ugt ugu ujo ujs uoa uob uog uoj uoo uor uos uot ur- ura urb urg uro urr urs urt uru usa usb usg usj uso usr uss ust usu uta utb utj uto utr uts utt utu uua uug uur uus uut uuu