-al -ol a-a a-b a-t aaa aab aad aak aal aao aat ab- aba abb abd abk abl abo abt ad- ada adb add adk adl ado adt aka akb akd akk akl ako al- ala alb ald alk all alo alt aoa aob aod aok aol aoo aot at- ata atb atd atl ato att baa bab bad bak bal bao bat bba bbb bbd bbk bbl bbo bbt bda bdb bdd bdk bdl bdo bdt bka bkb bkk bkl bko bkt bla blb bld blk bll blo blt boa bob bod bok bol boo bot bta btb btd btk btl bto btt daa dab dad dak dal dao dat dba dbb dbd dbk dbl dbo dbt dda ddb ddd ddk ddl ddo ddt dka dkb dkk dkl dko dkt dl- dla dlb dld dlk dll dlo dlt doa dob dod dok dol doo dot dta dtb dtd dtk dtl dto dtt k-t ka- kaa kab kad kak kal kao kat kba kbb kbd kbk kbl kbo kda kdb kdk kdl kdo kdt kkb kkk kkl kkt kl- kla klb kld klo klt koa kob kod kok kol koo kot kta ktb ktk ktl kto ktt la- laa lab lad lak lal lao lat lba lbb lbd lbk lbl lbo lbt lda ldb ldd ldk ldl ldo ldt lka lkb lkl lkt lla llb lld llk lll llo llt loa lob lod lok lol loo lot lta ltb ltd ltk ltl lto ltt oaa oab oad oak oal oao oat ob- oba obb obd obk obl obo obt oda odb odd odl odo odt oka okb okd okk okl oko ola olb old olk oll olo olt oo- ooa oob ood ook ool ooo oot ot- ota otb otd otk otl oto ott taa tab tad tak tal tao tat tba tbb tbd tbk tbl tbo tbt tda tdb tdd tdk tdl tdo tdt tka tkb tkk tkl tko tkt tla tld tlk tll tlo tlt to- toa tob tod tok tol too tot tta ttb ttd ttk ttl tto ttt