a-a a-b a-i a-t aaa aab aaf aai aao aar aat aau aay ab- aba abb abf abi abo abr abt abu aby af- afa afb aff afi afo afr aft afu afy ai- aia aib aif aii aio air ait aiu aiy aoa aob aof aoi aoo aor aot aou ar- ara arb arf ari aro arr art aru ary at- ata atb atf ati ato atr att atu au- aua aub auf aui auo aur aut ay- aya ayf ayi ayo ayr ayt ayu b-u baa bab baf bai bao bar bat bau bay bba bbb bbf bbi bbo bbr bbt bbu bby bfa bfb bff bfi bfo bfr bft bfu bfy bi- bia bib bif bii bio bir bit biu biy boa bob bof boi boo bor bot bou boy bra brb brf bri bro brr brt bru bry bta btb btf bti bto btr btt btu bty bua bub buf bui buo bur but buu buy by- bya byf byi byo byr byt byu faa fab faf fai fao far fat fau fay fba fbb fbf fbi fbo fbr fbt fbu ffa fff ffi ffo ffr fft ffu ffy fia fib fif fii fir fit fiu foa fob fof foi foo for fot fou foy fra frb frf fri fro frr frt fru fry fta ftb ftf fti fto ftr ftt ftu fty fua fub fuf fui fuo fur fut fuu fy- fya fyb fyi fyo i-f ia- iaa iab iaf iai iao iar iat iau iba ibb ibf ibi ibo ibr ibt ibu iby ifa ifb iff ifi ifo ifr ift ifu ify iia iib iif iii iio iir iit iiu io- ioa iob iof ioi ioo ior iot iou ir- ira irb irf iri iro irr irt iru iry ita itb itf iti ito itt itu ity iu- iua iub iui iur iut iya iyo iyr iyt iyy o-i oaa oab oaf oai oao oar oat oau ob- oba obb obf obi obo obr obt obu oby of- ofa ofb off ofi ofo ofr oft ofu oia oib oif oii oio oir oit oiu oo- ooa oob oof ooi ooo oor oot or- ora orb orf ori oro orr ort oru ory ot- ota otb otf oti oto otr ott otu ou- oua ouf oui ouo our out oya oyi oyo ra- raa rab raf rai rao rar rat rau ray rba rbb rbf rbi rbo rbr rbt rbu rfa rfb rff rfi rfo rfr rft rfu ria rib rif rii rio rir rit riy roa rob rof roi roo ror rot rou roy rra rrb rrf rri rrr rrt rru rta rtb rtf rti rto rtr rtt rtu rty rua rub ruf rui ruo rur rut ruu ruy ry- rya ryf ryo ryr ryu ryy taa tab taf tai tao tar tat tau tay tba tbb tbf tbi tbo tbr tbt tbu tfa tfb tff tfi tfo tfr tft tfu tia tib tif tii tio tir tit tiu tiy to- toa tob tof toi too tor tot tou toy tra trb trf tri tro trr trt tru try tta ttb ttf tti tto ttr ttt ttu tty tua tub tuf tui tuo tur tut tuu tuy tya tyf tyo tyr tyt ua- uaa uab uaf uai uao uar uat uau uay uba ubb ubf ubi ubo ubr ubt ubu uby ufa uff ufi ufo ufr uft ufu uia uib uif uii uio uir uit uiu uoa uob uoo uor uot ur- ura urb urf uri uro urr urt uru ury uta utb utf uti uto utr utt utu uty uua uur uut uuu uyi uyo uyu yaa yab yaf yai yao yar yat yau yay ybf ybi ybr yby yfa yff yfr yft yfu yif yii yio yir yit yob yof yoi yoo yor yot you yoy yra yrf yro yrt yru yta ytf yto ytr ytt ytu yua yui yuo yur yut yuu yuy yyb yyf yyt yyu yyy