a-a a-b a-t aaa aab aag aaj aan aao aar aas aat ab- aba abb abg abj abn abo abr abs abt ag- aga agb agg agj agn ago agr ags agt aja ajb ajj ajn ajo ajr ajs ajt an- ana anb ang anj ann ano anr ans ant aoa aob aog aoj aon aoo aor aos aot ar- ara arb arg arj arn aro arr ars art as- asa asb asg asj asn aso asr ass ast at- ata atb atg atn ato atr ats att baa bab bag baj ban bao bar bas bat bba bbb bbg bbn bbo bbr bbs bbt bga bgb bgg bgn bgo bgr bgs bgt bja bjg bjj bjn bjr bjs bjt bna bnb bng bnj bnn bno bnr bns bnt boa bob bog boj bon boo bor bos bot bra brb brg brj brn bro brr brs brt bsa bsb bsg bsj bsn bso bsr bss bst bta btb btg btn bto btr bts btt gaa gab gag gaj gan gao gar gas gat gba gbg gbj gbn gbo gbr gbs gbt gga ggb ggg ggj ggn ggo ggr ggs ggt gja gjg gjr gjt gna gnb gnn gno gnr gns gnt goa gob gog gon goo gor gos got gra grb grg grj grn gro grr grs grt gsa gsb gsg gsj gsn gso gsr gss gst gta gtb gtg gtn gto gtr gts gtt jaa jab jag jaj jan jao jar jas jat jba jbg jbj jbo jbr jbs jbt jga jgb jgn jgo jgr jgs jgt jja jjb jjg jjj jjr jjs jna jng jnj jnn jno jnr jns jnt joa job jog joj jon joo jor jos jot jra jrb jrg jrn jro jrr jrs jrt jsa jsb jsg jsj jsn jso jsr jss jst jta jtb jtg jtn jtr jts jtt naa nab nag naj nan nao nar nas nat nba nbb nbg nbn nbo nbr nbs nbt nga ngb ngg ngj ngn ngo ngs ngt nja njn njs nna nnb nng nnn nno nns nnt no- noa nob nog noj non noo nor nos not nra nrb nrg nrj nrn nro nrr nrs nrt nsa nsb nsg nsn nso nsr nss nst nta ntb ntg ntn nto ntr nts ntt oaa oab oag oaj oan oao oar oas oat ob- oba obb obg obj obn obo obr obs obt oga ogg ogn ogo ogs ogt oja ojb ojo ojs on- ona onb ong onj onn ono onr ons ont oo- ooa oob oog oon ooo oor oos oot or- ora orb org orn oro orr ors ort os- osa osb osg osj osn oso osr oss ost ot- ota otb otg otn oto otr ots ott ra- raa rab rag raj ran rao rar ras rat rba rbb rbg rbn rbo rbr rbs rbt rga rgb rgg rgn rgo rgr rgs rgt rja rjg rjr rna rnb rng rnn rno rnr rns rnt roa rob rog roj ron roo ror ros rot rra rrb rrg rrn rrr rrs rrt rsa rsb rsg rsj rsn rso rsr rss rst rta rtb rtg rtj rtn rto rtr rts rtt saa sab sag saj san sao sar sas sat sba sbb sbg sbj sbn sbo sbr sbs sbt sga sgb sgg sgn sgo sgr sgs sgt sja sjb sjj sjr sjs sjt sna snb sng snj snn sno snr sns snt soa sob sog soj son soo sor sos sot sr- sra srb srg srj srn sro srr srs srt ss- ssa ssb ssg ssj ssn sso ssr sss sst sta stb stg stj stn sto str sts stt taa tab tag taj tan tao tar tas tat tba tbb tbg tbj tbn tbo tbr tbs tbt tga tgb tgg tgn tgo tgr tgs tgt tjo tjr tjs tna tnb tng tnn tno tnr tns tnt to- toa tob tog toj ton too tor tos tot tra trb trg trn tro trr trs trt tsa tsb tsg tsj tsn tso tsr tss tst tta ttb ttg ttn tto ttr tts ttt