-al -ol a-a a-b a-i aaa aab aag aai aak aal aan aao aar aas ab- aba abb abg abi abk abl abn abo abr abs ag- aga agb agg agi agk agl agn ago agr ags ai- aia aib aig aii aik ail ain aio air ais aka akb akg aki akk akl akn ako akr aks al- ala alb alg ali alk all aln alo alr als an- ana anb ang ani ank anl ann ano anr ans aoa aob aog aoi aok aol aon aoo aor aos ar- ara arb arg ari ark arl arn aro arr ars as- asa asb asg asi ask asl asn aso asr ass baa bab bag bai bak bal ban bao bar bas bba bbb bbg bbi bbk bbl bbn bbo bbr bbs bga bgb bgg bgi bgk bgl bgn bgo bgr bgs bi- bia bib big bii bik bil bin bio bir bis bka bkb bkg bkk bkl bkn bko bkr bks bla blb blg bli blk bll bln blo blr bls bna bnb bng bni bnk bnl bnn bno bnr bns boa bob bog boi bok bol bon boo bor bos bra brb brg bri brk brl brn bro brr brs bsa bsb bsg bsi bsk bsl bsn bso bsr bss gaa gab gag gai gak gal gan gao gar gas gba gbg gbi gbk gbl gbn gbo gbr gbs gga ggb ggg ggi ggn ggo ggr ggs gia gib gig gii gik gil gin gio gir gis gka gkb gkn gko gks gla glb glg gli glk gll gln glo glr gls gna gnb gni gnl gnn gno gnr gns goa gob gog goi gok gol gon goo gor gos gra grb grg gri grk grl grn gro grr grs gsa gsb gsg gsi gsk gsl gsn gso gsr gss ia- iaa iab iag iai ial ian iao iar ias iba ibb ibg ibi ibk ibl ibn ibo ibr ibs iga igb igg igi igk igl ign igo igr igs iia iib iii iil iin iio iir iis ika ikb iki ikk ikl iko ikr iks il- ila ilb ilg ili ilk ill iln ilo ilr ils in- ina inb ing ini ink inl inn ino inr ins io- ioa iob iog ioi iol ion ioo ior ios ir- ira irb irg iri irk irl irn iro irr irs is- isa isb isg isi isk isl isn iso isr iss ka- kaa kab kag kai kak kal kan kao kar kas kba kbb kbi kbk kbl kbn kbo kbr kbs kga kgb kgi kgl kgo kgs kia kib kig kii kik kil kin kio kir kis kkb kki kkk kkl kkn kkr kks kl- kla klb klg kli klo klr kls kn- kna kng kni knk knl knn kno knr koa kob kog koi kok kol kon koo kor kos kra krg kri krk krl krn kro krr krs ksa ksb ksg ksi ksk ksl ksn kso ksr kss la- laa lab lag lai lak lal lan lao lar las lba lbb lbg lbi lbk lbl lbo lbr lbs lga lgb lgg lgi lgk lgl lgn lgo lgr lgs lia lib lig lii lik lil lin lio lir lis lka lkb lkg lkl lkr lks lla llb llg lli llk lll lln llo llr lls lna lnb lng lni lnk lnl lnn lno lnr lns loa lob log loi lok lol lon loo lor los lra lrb lrg lri lrk lrn lro lrr lrs lsa lsb lsg lsi lsk lsl lsn lso lsr lss n-i naa nab nag nai nak nal nan nao nar nas nba nbb nbg nbi nbk nbl nbn nbo nbr nbs nga ngb ngg ngi ngk ngl ngn ngo ngs nia nib nig nii nik nil nin nio nir nis nka nki nkk nkn nko nkr nks nla nlb nlg nli nlk nll nln nlo nlr nls nna nnb nng nni nnk nnl nnn nno nns no- noa nob nog noi nok nol non noo nor nos nra nrb nrg nri nrk nrl nrn nro nrr nrs nsa nsb nsg nsi nsk nsl nsn nso nsr nss o-i oaa oab oag oai oak oal oan oao oar oas ob- oba obb obg obi obk obl obn obo obr obs oga ogg ogi ogl ogn ogo ogs oia oib oii oik oil oin oio oir ois oka okb okg oki okk okl oko okr oks ola olb olg oli olk oll oln olo ols on- ona onb ong oni onk onl onn ono onr ons oo- ooa oob oog ooi ook ool oon ooo oor oos or- ora orb org ori ork orl orn oro orr ors os- osa osb osg osi osk osl osn oso osr oss ra- raa rab rag rai rak ral ran rao rar ras rba rbb rbg rbi rbk rbl rbn rbo rbr rbs rga rgb rgg rgi rgk rgn rgo rgr rgs ria rib rig rii rik ril rin rio rir ris rkb rkg rkk rko rks rla rlg rli rll rln rlo rlr rls rna rnb rng rni rnn rno rnr rns roa rob rog roi rok rol ron roo ror ros rra rrb rrg rri rrk rrl rrn rrr rrs rsa rsb rsg rsi rsk rsl rsn rso rsr rss saa sab sag sai sak sal san sao sar sas sba sbb sbg sbi sbk sbl sbn sbo sbr sbs sga sgb sgg sgi sgk sgl sgn sgo sgr sgs sia sib sig sii sik sil sin sio sir sis sk- ska skb skg ski skk skl sko skr sks sla slb slg sli slk sll sln slo slr sls sna snb sng sni snk snl snn sno snr sns soa sob sog soi sok sol son soo sor sos sr- sra srb srg sri srk srl srn sro srr srs ss- ssa ssb ssg ssi ssk ssl ssn sso ssr sss