-al -ol a-a a-b a-i a-t aaa aab aad aai aal aao aat ab- aba abb abd abi abl abo abt ad- ada adb add adi adl ado adt ai- aia aib aid aii ail aio ait al- ala alb ald ali all alo alt aoa aob aod aoi aol aoo aot at- ata atb atd ati atl ato att baa bab bad bai bal bao bat bba bbb bbd bbi bbl bbo bbt bda bdb bdd bdi bdl bdo bdt bi- bia bib bid bii bil bio bit bla blb bld bli bll blo blt boa bob bod boi bol boo bot bta btb btd bti btl bto btt daa dab dad dai dal dao dat dba dbb dbd dbi dbl dbo dbt dda ddb ddd ddi ddl ddo ddt di- dia dib did dii dil dio dit dl- dla dlb dld dli dll dlo dlt doa dob dod doi dol doo dot dta dtb dtd dti dtl dto dtt i-d ia- iaa iab iad iai ial iao iat iba ibb ibd ibi ibl ibo ibt ida idb idd idi idl ido idt iia iib iid iii iil iio iit il- ila ilb ild ili ill ilo ilt io- ioa iob iod ioi iol ioo iot ita itb itd iti itl ito itt la- laa lab lad lai lal lao lat lba lbb lbd lbi lbl lbo lbt lda ldb ldd ldi ldl ldo ldt lia lib lid lii lil lio lit lla llb lld lli lll llo llt loa lob lod loi lol loo lot lta ltb ltd lti ltl lto ltt o-i oaa oab oad oai oal oao oat ob- oba obb obd obi obl obo obt oda odb odd odi odl odo odt oia oib oid oii oil oio oit ola olb old oli oll olo olt oo- ooa oob ood ooi ool ooo oot ot- ota otb otd oti otl oto ott taa tab tad tai tal tao tat tba tbb tbd tbi tbl tbo tbt tda tdb tdd tdi tdl tdo tdt tia tib tid tii til tio tit tla tld tli tll tlo tlt to- toa tob tod toi tol too tot tta ttb ttd tti ttl tto ttt