a-a a-b a-i a-t aaa aab aad aai aao aat aau ab- aba abb abd abi abo abt abu ad- ada adb add adi ado adt adu ai- aia aib aid aii aio ait aiu aoa aob aod aoi aoo aot aou at- ata atb atd ati ato att atu au- aua aub aud aui auo aut b-u baa bab bad bai bao bat bau bba bbb bbd bbi bbo bbt bbu bda bdb bdd bdi bdo bdt bdu bi- bia bib bid bii bio bit biu boa bob bod boi boo bot bou bta btb btd bti bto btt btu bua bub bud bui buo but buu daa dab dad dai dao dat dau dba dbb dbd dbi dbo dbt dbu dda ddb ddd ddi ddo ddt ddu di- dia dib did dii dio dit diu doa dob dod doi doo dot dou dta dtb dtd dti dto dtt dtu dua dub dud dui duo dut i-d ia- iaa iab iad iai iao iat iau iba ibb ibd ibi ibo ibt ibu ida idb idd idi ido idt idu iia iib iid iii iio iit iiu io- ioa iob iod ioi ioo iot iou ita itb itd iti ito itt itu iu- iua iub iud iui iut o-i oaa oab oad oai oao oat oau ob- oba obb obd obi obo obt obu oda odb odd odi odo odt odu oia oib oid oii oio oit oiu oo- ooa oob ood ooi ooo oot ot- ota otb otd oti oto ott otu ou- oua oud oui ouo out taa tab tad tai tao tat tau tba tbb tbd tbi tbo tbt tbu tda tdb tdd tdi tdo tdt tdu tia tib tid tii tio tit tiu to- toa tob tod toi too tot tou tta ttb ttd tti tto ttt ttu tua tub tud tui tuo tut tuu ua- uaa uab uad uai uao uat uau uba ubb ubi ubo ubt ubu uda udb udd udi udo udt udu uia uib uid uii uio uit uiu uoa uob uod uoo uot uta utb utd uti uto utt utu uua uut uuu