-th a-a a-b a-t aaa aab aad aae aah aao aat ab- aba abb abd abe abh abo abt ad- ada adb add ade adh ado adt aea aeb aed aee aeh aeo aet aha ahb ahd ahe ahh aho aht aoa aob aod aoe aoh aoo aot at- ata atb atd ate ath ato att baa bab bad bae bah bao bat bba bbb bbd bbe bbh bbo bbt bda bdb bdd bde bdh bdo bdt be- bea beb bed bee beh beo bet bha bhb bhd bhe bhh bho bht boa bob bod boe boh boo bot bta btb btd bte bth bto btt daa dab dad dae dah dao dat dba dbb dbd dbe dbh dbo dbt dda ddb ddd dde ddh ddo ddt de- dea deb ded dee deh deo det dh- dha dhb dhd dhe dhh dho dht doa dob dod doe doh doo dot dta dtb dtd dte dth dto dtt eaa eab ead eae eah eao eat eba ebb ebd ebe ebh ebo ebt ed- eda edb edd ede edh edo edt eea eeb eed eee eeo eet eha ehb ehd ehe ehh eho eht eo- eoa eob eod eoe eoh eoo eot eta etb etd ete eth eto ett haa hab had hae hah hao hat hba hbb hbd hbe hbh hbo hbt hda hdb hdd hde hdh hdo hdt he- hea heb hed hee heh heo het hha hhb hhd hhe hhh hho hht hoa hob hod hoe hoh hoo hot hta htb htd hte hth hto htt oaa oab oad oae oah oao oat ob- oba obb obd obe obh obo obt oda odb odd ode odh odo odt oea oeb oed oee oeh oeo oet oha ohd ohe ohh oho oht oo- ooa oob ood ooh ooo oot ot- ota otb otd ote oth oto ott taa tab tad tae tah tao tat tba tbb tbd tbe tbh tbo tbt tda tdb tdd tde tdh tdo tdt te- tea teb ted tee teh teo tet th- tha thb thd the thh tho tht to- toa tob tod toe toh too tot tta ttb ttd tte tth tto ttt