-th a-a a-b a-t aaa aab aad aah aan aao aat aau ab- aba abb abd abh abn abo abt abu ad- ada adb add adh adn ado adt adu aha ahb ahd ahh ahn aho aht ahu an- ana anb and anh ann ano ant anu aoa aob aod aoh aon aoo aot aou at- ata atb atd ath atn ato att atu au- aua aub aud auh aun auo aut b-u baa bab bad bah ban bao bat bau bba bbb bbd bbh bbn bbo bbt bbu bda bdb bdd bdh bdo bdt bdu bha bhb bhd bhh bho bht bhu bna bnb bnd bnn bno bnt bnu boa bob bod boh bon boo bot bou bta btb btd bth btn bto btt btu bua bub bud buh bun buo but buu daa dab dad dah dan dao dat dau dba dbb dbd dbh dbn dbo dbt dbu dda ddb ddd ddh ddn ddo ddt ddu dh- dha dhb dhd dhh dho dht dhu dna dnb dnd dnh dnn dno dnt doa dob dod doh don doo dot dou dta dtb dtd dth dtn dto dtt dtu dua dub dud duh dun duo dut haa hab had hah han hao hat hau hba hbb hbd hbh hbn hbo hbt hbu hda hdb hdd hdh hdn hdo hdt hdu hha hhb hhd hhh hhn hho hht hhu hna hnb hnd hnh hnn hno hnt hnu hoa hob hod hoh hon hoo hot hou hta htb htd hth htn hto htt hua hub hud huh hun huo hut huu naa nab nad nah nan nao nat nau nba nbb nbd nbn nbo nbt nbu nda ndb ndd ndh ndn ndo ndt ndu nha nhb nhd nhh nhn nht nhu nna nnb nnh nnn nno nnt nnu no- noa nob nod noh non noo not nou nta ntb ntd nth ntn nto ntt ntu nua nub nud nuh nun nuo nut nuu oaa oab oad oah oan oao oat oau ob- oba obb obd obh obn obo obt obu oda odb odd odh odn odo odt odu oha ohd ohh ohn oho oht ohu on- ona onb ond onh onn ono ont onu oo- ooa oob ood ooh oon ooo oot ot- ota otb otd oth otn oto ott otu ou- oua oud ouh oun ouo out taa tab tad tah tan tao tat tau tba tbb tbd tbh tbn tbo tbt tbu tda tdb tdd tdh tdn tdo tdt tdu th- tha thb thd thh thn tho tht thu tna tnb tnd tnh tnn tno tnt to- toa tob tod toh ton too tot tou tta ttb ttd tth ttn tto ttt ttu tua tub tud tuh tun tuo tut tuu ua- uaa uab uad uah uan uao uat uau uba ubb ubh ubn ubo ubt ubu uda udb udd udn udo udt udu uha uhb uhd uhh uho uht uhu un- una unb und unh unn uno unt unu uoa uob uod uon uoo uot uta utb utd uth utn uto utt utu uua uun uut uuu