a-a a-b a-t aaa aab aad aae aaj aak aao aat ab- aba abb abd abe abj abk abo abt ad- ada adb add ade adj adk ado adt aea aeb aed aee aej aek aeo aet aja ajb ajd aje ajj ajk ajo ajt aka akb akd ake akj akk ako aoa aob aod aoe aoj aok aoo aot at- ata atb atd ate ato att baa bab bad bae baj bak bao bat bba bbb bbd bbe bbk bbo bbt bda bdb bdd bde bdj bdk bdo bdt be- bea beb bed bee bek beo bet bja bjd bjj bjk bjt bka bkb bke bkk bko bkt boa bob bod boe boj bok boo bot bta btb btd bte btk bto btt daa dab dad dae daj dak dao dat dba dbb dbd dbe dbk dbo dbt dda ddb ddd dde ddk ddo ddt de- dea deb ded dee dej dek deo det dj- dja djb djd dje djk djo djt dka dkb dke dkk dko dkt doa dob dod doe doj dok doo dot dta dtb dtd dte dtj dtk dto dtt eaa eab ead eae eaj eak eao eat eba ebb ebd ebe ebj ebk ebo ebt ed- eda edb edd ede edj edk edo edt eea eeb eed eee eek eeo eet eja ejd ejo ejt eka ekb ekd eke eko ekt eo- eoa eob eod eoe eok eoo eot eta etb etd ete etj etk eto ett j-d jaa jab jad jae jaj jak jao jat jba jbj jbk jbo jbt jda jdb jde jdo jdt jea jeb jed jee jej jek jeo jet jja jjb jjj jjk jka jkb jkk jko jkt joa job jod joe joj jok joo jot jta jtb jte jtk jtt k-t ka- kaa kab kad kae kaj kak kao kat kba kbb kbd kbe kbk kbo kda kdb kde kdk kdo kdt ke- kea keb ked kee kek keo ket kjb kje kkb kke kkk kkt koa kob kod koe kok koo kot kta ktb kte ktj ktk kto ktt oaa oab oad oae oaj oak oao oat ob- oba obb obd obe obj obk obo obt oda odb odd ode odo odt oea oeb oed oee oeo oet oja ojb ojd oje ojo oka okb okd oke okj okk oko oo- ooa oob ood ook ooo oot ot- ota otb otd ote otk oto ott taa tab tad tae taj tak tao tat tba tbb tbd tbe tbj tbk tbo tbt tda tdb tdd tde tdk tdo tdt te- tea teb ted tee tej tek teo tet tjd tje tjo tka tkb tke tkk tko tkt to- toa tob tod toe toj tok too tot tta ttb ttd tte ttk tto ttt