-al -ol a-a a-b aaa aab aad aah aak aal aao aar ab- aba abb abd abh abk abl abo abr ad- ada adb add adh adk adl ado adr aha ahb ahd ahh ahk ahl aho ahr aka akb akd akh akk akl ako akr al- ala alb ald alh alk all alo alr aoa aob aod aoh aok aol aoo aor ar- ara arb ard arh ark arl aro arr baa bab bad bah bak bal bao bar bba bbb bbd bbh bbk bbl bbo bbr bda bdb bdd bdh bdk bdl bdo bdr bha bhb bhd bhh bhk bhl bho bhr bka bkb bkk bkl bko bkr bla blb bld blh blk bll blo blr boa bob bod boh bok bol boo bor bra brb brd brh brk brl bro brr daa dab dad dah dak dal dao dar dba dbb dbd dbh dbk dbl dbo dbr dda ddb ddd ddh ddk ddl ddo ddr dh- dha dhb dhd dhh dhk dhl dho dhr dka dkb dkk dkl dko dkr dl- dla dlb dld dlh dlk dll dlo dlr doa dob dod doh dok dol doo dor dra drb drd drk drl dro drr haa hab had hah hak hal hao har hba hbb hbd hbh hbk hbl hbo hbr hda hdb hdd hdh hdk hdl hdo hdr hha hhb hhd hhh hhk hhl hho hhr hka hkb hkd hkh hkk hkl hko hkr hla hlb hld hlh hll hlo hlr hoa hob hod hoh hok hol hoo hor hr- hra hrb hrd hrh hrk hrl hro hrr ka- kaa kab kad kah kak kal kao kar kba kbb kbd kbh kbk kbl kbo kbr kda kdb kdh kdk kdl kdo kdr kha khh khk kho khr kkb kkh kkk kkl kkr kl- kla klb kld klh klo klr koa kob kod koh kok kol koo kor kra krd krk krl kro krr la- laa lab lad lah lak lal lao lar lba lbb lbd lbh lbk lbl lbo lbr lda ldb ldd ldh ldk ldl ldo ldr lha lhb lhd lhh lhk lho lhr lka lkb lkh lkl lkr lla llb lld llk lll llo llr loa lob lod loh lok lol loo lor lra lrb lrd lrh lrk lro lrr oaa oab oad oah oak oal oao oar ob- oba obb obd obh obk obl obo obr oda odb odd odh odl odo odr oha ohd ohh ohl oho ohr oka okb okd okk okl oko okr ola olb old olk oll olo oo- ooa oob ood ooh ook ool ooo oor or- ora orb ord orh ork orl oro orr ra- raa rab rad rah rak ral rao rar rba rbb rbd rbh rbk rbl rbo rbr rda rdb rdd rdh rdl rdo rdr rh- rha rhb rhd rhh rhl rho rhr rkb rkk rko rla rld rlh rll rlo rlr roa rob rod roh rok rol roo ror rra rrb rrd rrh rrk rrl rrr