a-a a-b a-t aaa aab aaj aak aan aao aar aas aat ab- aba abb abj abk abn abo abr abs abt aja ajb ajj ajk ajn ajo ajr ajs ajt aka akb akj akk akn ako akr aks an- ana anb anj ank ann ano anr ans ant aoa aob aoj aok aon aoo aor aos aot ar- ara arb arj ark arn aro arr ars art as- asa asb asj ask asn aso asr ass ast at- ata atb atn ato atr ats att baa bab baj bak ban bao bar bas bat bba bbb bbk bbn bbo bbr bbs bbt bja bjj bjk bjn bjr bjs bjt bka bkb bkk bkn bko bkr bks bkt bna bnb bnj bnk bnn bno bnr bns bnt boa bob boj bok bon boo bor bos bot bra brb brj brk brn bro brr brs brt bsa bsb bsj bsk bsn bso bsr bss bst bta btb btk btn bto btr bts btt jaa jab jaj jak jan jao jar jas jat jba jbj jbk jbo jbr jbs jbt jja jjb jjj jjk jjr jjs jka jkb jkk jkn jko jkr jks jkt jna jnj jnn jno jnr jns jnt joa job joj jok jon joo jor jos jot jra jrb jrk jrn jro jrr jrs jrt jsa jsb jsj jsk jsn jso jsr jss jst jta jtb jtk jtn jtr jts jtt k-t ka- kaa kab kaj kak kan kao kar kas kat kba kbb kbk kbn kbo kbr kbs kjb kjr kjs kkb kkk kkn kkr kks kkt kn- kna knk knn kno knr knt koa kob kok kon koo kor kos kot kra krk krn kro krr krs krt ksa ksb ksk ksn kso ksr kss kst kta ktb ktj ktk ktn kto ktr kts ktt naa nab naj nak nan nao nar nas nat nba nbb nbk nbn nbo nbr nbs nbt nja njk njn njs nka nkj nkk nkn nko nkr nks nkt nna nnb nnk nnn nno nns nnt no- noa nob noj nok non noo nor nos not nra nrb nrj nrk nrn nro nrr nrs nrt nsa nsb nsk nsn nso nsr nss nst nta ntb ntk ntn nto ntr nts ntt oaa oab oaj oak oan oao oar oas oat ob- oba obb obj obk obn obo obr obs obt oja ojb ojo ojs oka okb okj okk oko okr oks on- ona onb onj onk onn ono onr ons ont oo- ooa oob ook oon ooo oor oos oot or- ora orb ork orn oro orr ors ort os- osa osb osj osk osn oso osr oss ost ot- ota otb otk otn oto otr ots ott ra- raa rab raj rak ran rao rar ras rat rba rbb rbk rbn rbo rbr rbs rbt rja rjk rjr rkb rkk rko rks rkt rna rnb rnn rno rnr rns rnt roa rob roj rok ron roo ror ros rot rra rrb rrk rrn rrr rrs rrt rsa rsb rsj rsk rsn rso rsr rss rst rta rtb rtj rtk rtn rto rtr rts rtt saa sab saj sak san sao sar sas sat sba sbb sbj sbk sbn sbo sbr sbs sbt sja sjb sjj sjk sjr sjs sjt sk- ska skb skj skk sko skr sks skt sna snb snj snk snn sno snr sns snt soa sob soj sok son soo sor sos sot sr- sra srb srj srk srn sro srr srs srt ss- ssa ssb ssj ssk ssn sso ssr sss sst sta stb stj stk stn sto str sts stt taa tab taj tak tan tao tar tas tat tba tbb tbj tbk tbn tbo tbr tbs tbt tjo tjr tjs tka tkb tkk tko tkr tks tkt tna tnb tnk tnn tno tnr tns tnt to- toa tob toj tok ton too tor tos tot tra trb trk trn tro trr trs trt tsa tsb tsj tsk tsn tso tsr tss tst tta ttb ttk ttn tto ttr tts ttt