a-a a-b a-t aaa aab aaf aao aar aas aat aau ab- aba abb abf abo abr abs abt abu af- afa afb aff afo afr afs aft afu aoa aob aof aoo aor aos aot aou ar- ara arb arf aro arr ars art aru as- asa asb asf aso asr ass ast asu at- ata atb atf ato atr ats att atu au- aua aub auf auo aur aus aut b-u baa bab baf bao bar bas bat bau bba bbb bbf bbo bbr bbs bbt bbu bfa bfb bff bfo bfr bfs bft bfu boa bob bof boo bor bos bot bou bra brb brf bro brr brs brt bru bsa bsb bsf bso bsr bss bst bsu bta btb btf bto btr bts btt btu bua bub buf buo bur bus but buu faa fab faf fao far fas fat fau fba fbb fbf fbo fbr fbs fbt fbu ffa fff ffo ffr ffs fft ffu foa fob fof foo for fos fot fou fra frb frf fro frr frs frt fru fsa fsb fsf fso fsr fss fst fsu fta ftb ftf fto ftr fts ftt ftu fua fub fuf fuo fur fus fut fuu oaa oab oaf oao oar oas oat oau ob- oba obb obf obo obr obs obt obu of- ofa ofb off ofo ofr ofs oft ofu oo- ooa oob oof ooo oor oos oot or- ora orb orf oro orr ors ort oru os- osa osb osf oso osr oss ost osu ot- ota otb otf oto otr ots ott otu ou- oua ouf ouo our ous out ra- raa rab raf rao rar ras rat rau rba rbb rbf rbo rbr rbs rbt rbu rfa rfb rff rfo rfr rfs rft rfu roa rob rof roo ror ros rot rou rra rrb rrf rrr rrs rrt rru rsa rsb rsf rso rsr rss rst rsu rta rtb rtf rto rtr rts rtt rtu rua rub ruf ruo rur rus rut ruu saa sab saf sao sar sas sat sau sba sbb sbf sbo sbr sbs sbt sbu sfa sfb sff sfo sfr sfs sft sfu soa sob sof soo sor sos sot sou sr- sra srb srf sro srr srs srt ss- ssa ssb ssf sso ssr sss sst ssu sta stb stf sto str sts stt stu sua sub suf suo sur sus sut suu taa tab taf tao tar tas tat tau tba tbb tbf tbo tbr tbs tbt tbu tfa tfb tff tfo tfr tfs tft tfu to- toa tob tof too tor tos tot tou tra trb trf tro trr trs trt tru tsa tsb tsf tso tsr tss tst tsu tta ttb ttf tto ttr tts ttt ttu tua tub tuf tuo tur tus tut tuu ua- uaa uab uaf uao uar uas uat uau uba ubb ubf ubo ubr ubs ubt ubu ufa uff ufo ufr ufs uft ufu uoa uob uoo uor uos uot ur- ura urb urf uro urr urs urt uru usa usb usf uso usr uss ust usu uta utb utf uto utr uts utt utu uua uur uus uut uuu

-ous a-fu aaaa aaab aaaf aaar aaas aaba aabb aabt aafa aafb aaff aaoo aara aaro aars aart aaru aasa aasf aass aast aasu aata aatf aatt aaus abaa abab abaf abar abas abat abau abb- abba abbb abbo abbr abbs abbt abff aboa abob abof aboo abor abos abot abou abra abro abrs abs- absa absf abss absu abta abts abtu abua abuf abus abut afaa afao afar afat afbs affa affo affs afft afoa afoo afor afr- afra afro afrs afru afsa afsb afst afta afts afua afus aoba aora aorb aors aort aoss aotf aouf aous aout arab araf arar aras arat arau arba arbs arfa arfb arff arfs arft arfu aroa arob aroo aror aros arr- arra arro arrr arrs arrt arru ars- arsa arso arst arsu arta arto artr arts arua arub arut asaa asab asaf asao asar asas asat asau asba asbo asbu asfa asob asof asor asos asot asou asra asro asrs asru assa asso assr asss asst assu asta astb asto astr asts asub asur asus at-t ataa atab atar atas atat atbs atfb atfs atob atof ator atos atot atra atro atru atsb atst atta atto attr atts attu atua atub atur atus auaa aufs aur- aura auro ausa aust ausu aut- auto auts baaa baaf baar baas baat baba babb babo babr babs babu baff bafo baft baos bar- bara barb barf baro barr bars bart baru basa basf baso bass bast basu bata batf bato bats batt batu bau- bauf baur bbas bbau bbbb bbbs bfas bffs bfsr bfta bfts bftt boab boar boas boat boba bobb bobo bobs bobu bofa boff bofs bofu boob boof boor boos boot bor- bora borf boro borr bors bort boru bosa boso boss bost bosu bota botb boto bots bott boua bouf bour bous bout brab braf brao bras brat brau brfu broa brob broo bror bros brot brou brrr brrs brsb brsr brst brus brut bsaa bsas bsat bsfa bsff bsfs bsos bsra bsts btaa btaf btob btor btrt btss bttb btus buar buat buba bubb bubo bubs bubu buff bufo bufr bur- bura burb buro burr burs burt buru busa buss bust busu but- buta buto buts butt buus faaa faas faba fabo fabs fabu fafa faff fafo fara farb faro farr fars fart faru fasa faso fass fast fata fatf fato fats fatt faur faut fbar fbrs fbus ffar ffff ffrr ffsa ffss fftf foaf foar foba fobs fobt fofo foof foos foot for- fora forb foro forr fors fort fosa fosb foso foss fost fota foto fots fott foua four fous fout frab fras frat frau frob fros frot frou frsb frso frst frta frub fsas fsfo fsra fssa fssf fsta ftos ftrs ftsa ftsr ftub fuar fuat fubb fubs fubu fuff fufu fuor fur- fura furo furr furs furt fusa fuso fuss fust fusu futa