a-a a-b a-i a-t aaa aab aad aai aao aar aat aay ab- aba abb abd abi abo abr abt aby ad- ada adb add adi ado adr adt ady ai- aia aib aid aii aio air ait aiy aoa aob aod aoi aoo aor aot ar- ara arb ard ari aro arr art ary at- ata atb atd ati ato atr att ay- aya ayd ayi ayo ayr ayt baa bab bad bai bao bar bat bay bba bbb bbd bbi bbo bbr bbt bby bda bdb bdd bdi bdo bdr bdt bdy bi- bia bib bid bii bio bir bit biy boa bob bod boi boo bor bot boy bra brb brd bri bro brr brt bry bta btb btd bti bto btr btt bty by- bya byd byi byo byr byt daa dab dad dai dao dar dat day dba dbb dbd dbi dbo dbr dbt dby dda ddb ddd ddi ddo ddr ddt ddy di- dia dib did dii dio dir dit diy doa dob dod doi doo dor dot doy dra drb drd dri dro drr drt dry dta dtb dtd dti dto dtr dtt dty dy- dya dyb dyd dyo dyr dyy i-d ia- iaa iab iad iai iao iar iat iba ibb ibd ibi ibo ibr ibt iby ida idb idd idi ido idr idt idy iia iib iid iii iio iir iit io- ioa iob iod ioi ioo ior iot ir- ira irb ird iri iro irr irt iry ita itb itd iti ito itt ity iya iyo iyr iyt iyy o-i oaa oab oad oai oao oar oat ob- oba obb obd obi obo obr obt oby oda odb odd odi odo odr odt oia oib oid oii oio oir oit oo- ooa oob ood ooi ooo oor oot or- ora orb ord ori oro orr ort ory ot- ota otb otd oti oto otr ott oya oyd oyi oyo ra- raa rab rad rai rao rar rat ray rba rbb rbd rbi rbo rbr rbt rda rdb rdd rdi rdo rdr rdt rdy ria rib rid rii rio rir rit riy roa rob rod roi roo ror rot roy rra rrb rrd rri rrr rrt rta rtb rtd rti rto rtr rtt rty ry- rya ryd ryo ryr ryy taa tab tad tai tao tar tat tay tba tbb tbd tbi tbo tbr tbt tda tdb tdd tdi tdo tdr tdt tdy tia tib tid tii tio tir tit tiy to- toa tob tod toi too tor tot toy tra trb trd tri tro trr trt try tta ttb ttd tti tto ttr ttt tty tya tyd tyo tyr tyt yaa yab yad yai yao yar yat yay ybi ybr yby yda ydo ydt ydy yid yii yio yir yit yob yod yoi yoo yor yot yoy yra yro yrt yta ytd yto ytr ytt yyb yyt yyy