-er a-a a-b a-c a-t aaa aab aac aad aae aam aao aar aat aau ab- aba abb abc abd abe abm abo abr abt abu ac- aca acb acc acd ace acm aco acr act acu ad- ada adb adc add ade adm ado adr adt adu aea aeb aec aed aee aem aeo aer aet aeu ama amb amc amd ame amm amo amr amt amu aoa aob aoc aod aoe aom aoo aor aot aou ar- ara arb arc ard are arm aro arr art aru at- ata atb atc atd ate atm ato atr att atu au- aua aub auc aud aue aum auo aur aut b-u baa bab bac bad bae bam bao bar bat bau bba bbb bbc bbd bbe bbm bbo bbr bbt bbu bca bcb bcc bcd bce bcm bco bcr bct bcu bda bdb bdc bdd bde bdm bdo bdr bdt bdu be- bea beb bec bed bee bem beo ber bet beu bma bmb bmc bmd bme bmm bmo bmr bmt bmu boa bob boc bod boe bom boo bor bot bou bra brb brd bre brm bro brr brt bru bta btb btc btd bte btm bto btr btt btu bua bub buc bud bue bum buo bur but buu c-- caa cab cac cad cae cam cao car cat cau cba cbb cbc cbd cbe cbm cbo cbr cbt cbu cca ccb ccc ccd cce ccm cco ccr cct ccu cda cdb cdc cdd cde cdm cdo cdr cdt cdu ce- cea ceb cec ced cee cem ceo cer cet ceu cma cmb cmc cmd cme cmm cmo cmr cmt cmu co- coa cob coc cod coe com coo cor cot cou cra crb crc crd cre crm cro crr crt cru cta ctb ctc ctd cte ctm cto ctr ctt ctu cua cub cuc cud cue cum cuo cur cut cuu daa dab dac dad dae dam dao dar dat dau dba dbb dbc dbd dbe dbm dbo dbr dbt dbu dca dcb dcc dcd dce dcm dco dcr dct dcu dda ddb ddc ddd dde ddm ddo ddr ddt ddu de- dea deb dec ded dee dem deo der det deu dma dmb dmc dmd dme dmm dmo dmr dmt dmu doa dob doc dod doe dom doo dor dot dou dra drb drc drd dre drm dro drr drt dru dta dtb dtc dtd dte dtm dto dtr dtt dtu dua dub duc dud due dum duo dur dut eaa eab eac ead eae eam eao ear eat eau eba ebb ebc ebd ebe ebm ebo ebr ebt ebu ec- eca ecb ecc ecd ece ecm eco ecr ect ecu ed- eda edb edc edd ede edm edo edr edt edu eea eeb eec eed eee eem eeo eer eet em- ema emb emc emd eme emm emo emr emt emu eo- eoa eob eoc eod eoe eom eoo eor eot eou era erb erc erd ere erm ero err ert eru eta etb etc etd ete etm eto etr ett etu eu- eua eub euc eud eue eur eut m-o m-r maa mab mac mad mae mam mao mar mat mau mba mbb mbc mbd mbe mbm mbo mbr mbt mbu mc- mca mcb mcc mcd mce mcm mco mcr mct mcu mda mdb mdc mdd mde mdm mdo mdr mdt mdu mea meb mec med mee mem meo mer met meu mma mmb mmc mmd mme mmm mmo mmr mmt mmu moa mob moc mod moe mom moo mor mot mou mra mrb mrc mrd mre mrm mro mrr mrt mru mta mtb mtc mtd mte mtm mto mtr mtt mtu mua mub muc mud mue mum mur mut muu oaa oab oac oad oae oam oao oar oat oau ob- oba obb obc obd obe obm obo obr obt obu oc- oca ocb occ ocd ocm oco ocr oct ocu oda odb odc odd ode odm odo odr odt odu oea oeb oec oed oee oem oeo oer oet om- oma omb omc omd ome omm omo omr omt omu oo- ooa oob ooc ood oom ooo oor oot or- ora orb orc ord ore orm oro orr ort oru ot- ota otb otc otd ote otm oto otr ott otu ou- oua ouc oud oue oum ouo our out ra- raa rab rac rad rae ram rao rar rat rau rba rbb rbc rbd rbe rbm rbo rbr rbt rbu rca rcb rcc rcd rce rcm rco rcr rct rcu rda rdb rdc rdd rde rdm rdo rdr rdt rdu re- rea reb rec red ree rem reo rer ret reu rma rmb rmc rmd rme rmm rmo rmr rmt roa rob roc rod roe rom roo ror rot rou rra rrb rrc rrd rrm rrr rrt rru rta rtb rtc rtd rte rtm rto rtr rtt rtu rua rub ruc rud rue rum ruo rur rut ruu taa tab tac tad tae tam tao tar tat tau tba tbb tbc tbd tbe tbm tbo tbr tbt tbu tca tcb tcc tcd tce tcm tco tcr tct tcu tda tdb tdc tdd tde tdm tdo tdr tdt tdu te- tea teb tec ted tee tem teo ter tet teu tma tmb tmc tmd tme tmm tmo tmr tmt tmu to- toa tob toc tod toe tom too tor tot tou tra trb trc trd tre trm tro trr trt tru tta ttb ttc ttd tte ttm tto ttr ttt ttu tua tub tuc tud tue tum tuo tur tut tuu ua- uaa uab uac uad uae uam uao uar uat uau uba ubb ubc ube ubo ubr ubt ubu uca ucb ucc ucd uce ucm uco ucr uct ucu uda udb udc udd ude udm udo udr udt udu uea ueb uec ued uee uem uer uet um- uma umb umc umd ume umm umo umr umt umu uoa uob uoc uod uoe uom uoo uor uot ur- ura urb urc urd ure urm uro urr urt uru uta utb utc