-al -ol a-a a-b a-i aaa aab aad aai aak aal aao aar aas ab- aba abb abd abi abk abl abo abr abs ad- ada adb add adi adk adl ado adr ads ai- aia aib aid aii aik ail aio air ais aka akb akd aki akk akl ako akr aks al- ala alb ald ali alk all alo alr als aoa aob aod aoi aok aol aoo aor aos ar- ara arb ard ari ark arl aro arr ars as- asa asb asd asi ask asl aso asr ass baa bab bad bai bak bal bao bar bas bba bbb bbd bbi bbk bbl bbo bbr bbs bda bdb bdd bdi bdk bdl bdo bdr bds bi- bia bib bid bii bik bil bio bir bis bka bkb bkk bkl bko bkr bks bla blb bld bli blk bll blo blr bls boa bob bod boi bok bol boo bor bos bra brb brd bri brk brl bro brr brs bsa bsb bsd bsi bsk bsl bso bsr bss daa dab dad dai dak dal dao dar das dba dbb dbd dbi dbk dbl dbo dbr dbs dda ddb ddd ddi ddk ddl ddo ddr dds di- dia dib did dii dik dil dio dir dis dka dkb dki dkk dkl dko dkr dks dl- dla dlb dld dli dlk dll dlo dlr dls doa dob dod doi dok dol doo dor dos dra drb drd dri drk drl dro drr drs dsa dsb dsd dsi dsk dsl dso dsr dss i-d ia- iaa iab iad iai ial iao iar ias iba ibb ibd ibi ibk ibl ibo ibr ibs ida idb idd idi idk idl ido idr ids iia iib iid iii iil iio iir iis ika ikb iki ikk ikl iko ikr iks il- ila ilb ild ili ilk ill ilo ilr ils io- ioa iob iod ioi iol ioo ior ios ir- ira irb ird iri irk irl iro irr irs is- isa isb isd isi isk isl iso isr iss ka- kaa kab kad kai kak kal kao kar kas kba kbb kbd kbi kbk kbl kbo kbr kbs kda kdb kdk kdl kdo kdr kds kia kib kid kii kik kil kio kir kis kkb kki kkk kkl kkr kks kl- kla klb kld kli klo klr kls koa kob kod koi kok kol koo kor kos kra krd kri krk krl kro krr krs ksa ksb ksd ksi ksk ksl kso ksr kss la- laa lab lad lai lak lal lao lar las lba lbb lbd lbi lbk lbl lbo lbr lbs lda ldb ldd ldi ldk ldl ldo ldr lds lia lib lid lii lik lil lio lir lis lka lkb lkl lkr lks lla llb lld lli llk lll llo llr lls loa lob lod loi lok lol loo lor los lra lrb lrd lri lrk lro lrr lrs lsa lsb lsd lsi lsk lsl lso lsr lss o-i oaa oab oad oai oak oal oao oar oas ob- oba obb obd obi obk obl obo obr obs oda odb odd odi odl odo odr ods oia oib oid oii oik oil oio oir ois oka okb okd oki okk okl oko okr oks ola olb old oli olk oll olo ols oo- ooa oob ood ooi ook ool ooo oor oos or- ora orb ord ori ork orl oro orr ors os- osa osb osd osi osk osl oso osr oss ra- raa rab rad rai rak ral rao rar ras rba rbb rbd rbi rbk rbl rbo rbr rbs rda rdb rdd rdi rdl rdo rdr rds ria rib rid rii rik ril rio rir ris rkb rkk rko rks rla rld rli rll rlo rlr rls roa rob rod roi rok rol roo ror ros rra rrb rrd rri rrk rrl rrr rrs rsa rsb rsd rsi rsk rsl rso rsr rss saa sab sad sai sak sal sao sar sas sba sbb sbd sbi sbk sbl sbo sbr sbs sda sdb sdd sdi sdk sdl sdo sdr sds sia sib sid sii sik sil sio sir sis sk- ska skb skd ski skk skl sko skr sks sla slb sld sli slk sll slo slr sls soa sob sod soi sok sol soo sor sos sr- sra srb srd sri srk srl sro srr srs ss- ssa ssb ssd ssi ssk ssl sso ssr sss