-th a-a a-b a-t aaa aab aad aae aah aan aat ab- aba abb abd abe abh abn abt ad- ada adb add ade adh adn adt aea aeb aed aee aeh aen aet aha ahb ahd ahe ahh ahn aht an- ana anb and ane anh ann ant at- ata atb atd ate ath atn att baa bab bad bae bah ban bat bba bbb bbd bbe bbh bbn bbt bda bdb bdd bde bdh bdt be- bea beb bed bee beh ben bet bha bhb bhd bhe bhh bht bna bnb bnd bne bnn bnt bta btb btd bte bth btn btt daa dab dad dae dah dan dat dba dbb dbd dbe dbh dbn dbt dda ddb ddd dde ddh ddn ddt de- dea deb ded dee deh den det dh- dha dhb dhd dhe dhh dht dna dnb dnd dne dnh dnn dnt dta dtb dtd dte dth dtn dtt eaa eab ead eae eah ean eat eba ebb ebd ebe ebh ebn ebt ed- eda edb edd ede edh edn edt eea eeb eed eee een eet eha ehb ehd ehe ehh ehn eht en- ena enb end ene enh enn ent eta etb etd ete eth etn ett haa hab had hae hah han hat hba hbb hbd hbe hbh hbn hbt hda hdb hdd hde hdh hdn hdt he- hea heb hed hee heh hen het hha hhb hhd hhe hhh hhn hht hna hnb hnd hne hnh hnn hnt hta htb htd hte hth htn htt naa nab nad nae nah nan nat nba nbb nbd nbe nbn nbt nda ndb ndd nde ndh ndn ndt ne- nea neb ned nee neh nen net nha nhb nhd nhe nhh nhn nht nna nnb nne nnh nnn nnt nta ntb ntd nte nth ntn ntt taa tab tad tae tah tan tat tba tbb tbd tbe tbh tbn tbt tda tdb tdd tde tdh tdn tdt te- tea teb ted tee teh ten tet th- tha thb thd the thh thn tht tna tnb tnd tne tnh tnn tnt tta ttb ttd tte tth ttn ttt