-ic a-a a-b a-c a-i a-t aaa aab aac aad aai aao aar aat aay ab- aba abb abc abd abi abo abr abt aby ac- aca acb acc acd aci aco acr act acy ad- ada adb adc add adi ado adr adt ady ai- aia aib aic aid aii aio air ait aiy aoa aob aoc aod aoi aoo aor aot ar- ara arb arc ard ari aro arr art ary at- ata atb atc atd ati ato atr att ay- aya ayc ayd ayi ayo ayr ayt baa bab bac bad bai bao bar bat bay bba bbb bbc bbd bbi bbo bbr bbt bby bca bcb bcc bcd bci bco bcr bct bcy bda bdb bdc bdd bdi bdo bdr bdt bdy bi- bia bib bic bid bii bio bir bit biy boa bob boc bod boi boo bor bot boy bra brb brd bri bro brr brt bry bta btb btc btd bti bto btr btt bty by- bya byc byd byi byo byr byt c-- caa cab cac cad cai cao car cat cay cba cbb cbc cbd cbi cbo cbr cbt cby cca ccb ccc ccd cci cco ccr cct cda cdb cdc cdd cdi cdo cdr cdt cdy ci- cia cib cic cid cii cio cir cit co- coa cob coc cod coi coo cor cot coy cra crb crc crd cri cro crr crt cry cta ctb ctc ctd cti cto ctr ctt cty cya cyb cyc cyd cyo cyr cyt daa dab dac dad dai dao dar dat day dba dbb dbc dbd dbi dbo dbr dbt dby dca dcb dcc dcd dci dco dcr dct dda ddb ddc ddd ddi ddo ddr ddt ddy di- dia dib dic did dii dio dir dit diy doa dob doc dod doi doo dor dot doy dra drb drc drd dri dro drr drt dry dta dtb dtc dtd dti dto dtr dtt dty dy- dya dyb dyc dyd dyo dyr dyy i-d ia- iaa iab iac iad iai iao iar iat iba ibb ibc ibd ibi ibo ibr ibt iby ica icb icc icd ici ico icr ict icy ida idb idc idd idi ido idr idt idy iia iib iic iid iii iio iir iit io- ioa iob ioc iod ioi ioo ior iot ir- ira irb irc ird iri iro irr irt iry ita itb itc itd iti ito itt ity iya iyc iyo iyr iyt iyy o-i oaa oab oac oad oai oao oar oat ob- oba obb obc obd obi obo obr obt oby oc- oca ocb occ ocd oci oco ocr oct oda odb odc odd odi odo odr odt oia oib oic oid oii oio oir oit oo- ooa oob ooc ood ooi ooo oor oot or- ora orb orc ord ori oro orr ort ory ot- ota otb otc otd oti oto otr ott oya oyd oyi oyo ra- raa rab rac rad rai rao rar rat ray rba rbb rbc rbd rbi rbo rbr rbt rca rcb rcc rcd rci rco rcr rct rda rdb rdc rdd rdi rdo rdr rdt rdy ria rib ric rid rii rio rir rit riy roa rob roc rod roi roo ror rot roy rra rrb rrc rrd rri rrr rrt rta rtb rtc rtd rti rto rtr rtt rty ry- rya ryc ryd ryo ryr ryy taa tab tac tad tai tao tar tat tay tba tbb tbc tbd tbi tbo tbr tbt tca tcb tcc tcd tci tco tcr tct tda tdb tdc tdd tdi tdo tdr tdt tdy tia tib tic tid tii tio tir tit tiy to- toa tob toc tod toi too tor tot toy tra trb trc trd tri tro trr trt try tta ttb ttc ttd tti tto ttr ttt tty tya tyc tyd tyo tyr tyt yaa yab yac yad yai yao yar yat yay ybc ybi ybr yby yca ycc ycd yci yco ycy yda ydo ydt ydy yid yii yio yir yit yob yoc yod yoi yoo yor yot yoy yra yrc yro yrt yta ytc ytd yto ytr ytt yyb yyc yyt yyy