a-a a-b a-t aaa aab aag aaj aak aan aao aas aat ab- aba abb abg abj abk abn abo abs abt ag- aga agb agg agj agk agn ago ags agt aja ajb ajj ajk ajn ajo ajs ajt aka akb akg akj akk akn ako aks an- ana anb ang anj ank ann ano ans ant aoa aob aog aoj aok aon aoo aos aot as- asa asb asg asj ask asn aso ass ast at- ata atb atg atn ato ats att baa bab bag baj bak ban bao bas bat bba bbb bbg bbk bbn bbo bbs bbt bga bgb bgg bgk bgn bgo bgs bgt bja bjg bjj bjk bjn bjs bjt bka bkb bkg bkk bkn bko bks bkt bna bnb bng bnj bnk bnn bno bns bnt boa bob bog boj bok bon boo bos bot bsa bsb bsg bsj bsk bsn bso bss bst bta btb btg btk btn bto bts btt gaa gab gag gaj gak gan gao gas gat gba gbg gbj gbk gbn gbo gbs gbt gga ggb ggg ggj ggn ggo ggs ggt gja gjg gjt gka gkb gkn gko gks gkt gna gnb gnn gno gns gnt goa gob gog gok gon goo gos got gsa gsb gsg gsj gsk gsn gso gss gst gta gtb gtg gtk gtn gto gts gtt jaa jab jag jaj jak jan jao jas jat jba jbg jbj jbk jbo jbs jbt jga jgb jgn jgo jgs jgt jja jjb jjg jjj jjk jjs jka jkb jkk jkn jko jks jkt jna jng jnj jnn jno jns jnt joa job jog joj jok jon joo jos jot jsa jsb jsg jsj jsk jsn jso jss jst jta jtb jtg jtk jtn jts jtt k-t ka- kaa kab kag kaj kak kan kao kas kat kba kbb kbk kbn kbo kbs kga kgb kgo kgs kjb kjs kkb kkk kkn kks kkt kn- kna kng knk knn kno knt koa kob kog kok kon koo kos kot ksa ksb ksg ksk ksn kso kss kst kta ktb ktg ktj ktk ktn kto kts ktt naa nab nag naj nak nan nao nas nat nba nbb nbg nbk nbn nbo nbs nbt nga ngb ngg ngj ngk ngn ngo ngs ngt nja njk njn njs nka nkj nkk nkn nko nks nkt nna nnb nng nnk nnn nno nns nnt no- noa nob nog noj nok non noo nos not nsa nsb nsg nsk nsn nso nss nst nta ntb ntg ntk ntn nto nts ntt oaa oab oag oaj oak oan oao oas oat ob- oba obb obg obj obk obn obo obs obt oga ogg ogn ogo ogs ogt oja ojb ojo ojs oka okb okg okj okk oko oks on- ona onb ong onj onk onn ono ons ont oo- ooa oob oog ook oon ooo oos oot os- osa osb osg osj osk osn oso oss ost ot- ota otb otg otk otn oto ots ott saa sab sag saj sak san sao sas sat sba sbb sbg sbj sbk sbn sbo sbs sbt sga sgb sgg sgk sgn sgo sgs sgt sja sjb sjj sjk sjs sjt sk- ska skb skg skj skk sko sks skt sna snb sng snj snk snn sno sns snt soa sob sog soj sok son soo sos sot ss- ssa ssb ssg ssj ssk ssn sso sss sst sta stb stg stj stk stn sto sts stt taa tab tag taj tak tan tao tas tat tba tbb tbg tbj tbk tbn tbo tbs tbt tga tgb tgg tgk tgn tgo tgs tgt tjo tjs tka tkb tkg tkk tko tks tkt tna tnb tng tnk tnn tno tns tnt to- toa tob tog toj tok ton too tos tot tsa tsb tsg tsj tsk tsn tso tss tst tta ttb ttg ttk ttn tto tts ttt