-th a-a a-b a-t aaa aab aad aae aah aak aao aat ab- aba abb abd abe abh abk abo abt ad- ada adb add ade adh adk ado adt aea aeb aed aee aeh aek aeo aet aha ahb ahd ahe ahh ahk aho aht aka akb akd ake akh akk ako aoa aob aod aoe aoh aok aoo aot at- ata atb atd ate ath ato att baa bab bad bae bah bak bao bat bba bbb bbd bbe bbh bbk bbo bbt bda bdb bdd bde bdh bdk bdo bdt be- bea beb bed bee beh bek beo bet bha bhb bhd bhe bhh bhk bho bht bka bkb bke bkk bko bkt boa bob bod boe boh bok boo bot bta btb btd bte bth btk bto btt daa dab dad dae dah dak dao dat dba dbb dbd dbe dbh dbk dbo dbt dda ddb ddd dde ddh ddk ddo ddt de- dea deb ded dee deh dek deo det dh- dha dhb dhd dhe dhh dhk dho dht dka dkb dke dkk dko dkt doa dob dod doe doh dok doo dot dta dtb dtd dte dth dtk dto dtt eaa eab ead eae eah eak eao eat eba ebb ebd ebe ebh ebk ebo ebt ed- eda edb edd ede edh edk edo edt eea eeb eed eee eek eeo eet eha ehb ehd ehe ehh eho eht eka ekb ekd eke ekh eko ekt eo- eoa eob eod eoe eoh eok eoo eot eta etb etd ete eth etk eto ett haa hab had hae hah hak hao hat hba hbb hbd hbe hbh hbk hbo hbt hda hdb hdd hde hdh hdk hdo hdt he- hea heb hed hee heh hek heo het hha hhb hhd hhe hhh hhk hho hht hka hkb hkd hkh hkk hko hkt hoa hob hod hoe hoh hok hoo hot hta htb htd hte hth htk hto htt k-t ka- kaa kab kad kae kah kak kao kat kba kbb kbd kbe kbh kbk kbo kda kdb kde kdh kdk kdo kdt ke- kea keb ked kee keh kek keo ket kha khe khh khk kho kkb kke kkh kkk kkt koa kob kod koe koh kok koo kot kta ktb kte kth ktk kto ktt oaa oab oad oae oah oak oao oat ob- oba obb obd obe obh obk obo obt oda odb odd ode odh odo odt oea oeb oed oee oeh oeo oet oha ohd ohe ohh oho oht oka okb okd oke okk oko oo- ooa oob ood ooh ook ooo oot ot- ota otb otd ote oth otk oto ott taa tab tad tae tah tak tao tat tba tbb tbd tbe tbh tbk tbo tbt tda tdb tdd tde tdh tdk tdo tdt te- tea teb ted tee teh tek teo tet th- tha thb thd the thh thk tho tht tka tkb tke tkk tko tkt to- toa tob tod toe toh tok too tot tta ttb ttd tte tth ttk tto ttt