-er -ic a-a a-b a-c a-i a-t aaa aab aac aad aae aai aam aao aar aat ab- aba abb abc abd abe abi abm abo abr abt ac- aca acb acc acd ace aci acm aco acr act ad- ada adb adc add ade adi adm ado adr adt aea aeb aec aed aee aei aem aeo aer aet ai- aia aib aic aid aie aii aim aio air ait ama amb amc amd ame ami amm amo amr amt aoa aob aoc aod aoe aoi aom aoo aor aot ar- ara arb arc ard are ari arm aro arr art at- ata atb atc atd ate ati atm ato atr att baa bab bac bad bae bai bam bao bar bat bba bbb bbc bbd bbe bbi bbm bbo bbr bbt bca bcb bcc bcd bce bci bcm bco bcr bct bda bdb bdc bdd bde bdi bdm bdo bdr bdt be- bea beb bec bed bee bei bem beo ber bet bi- bia bib bic bid bie bii bim bio bir bit bma bmb bmc bmd bme bmi bmm bmo bmr bmt boa bob boc bod boe boi bom boo bor bot bra brb brd bre bri brm bro brr brt bta btb btc btd bte bti btm bto btr btt c-- caa cab cac cad cae cai cam cao car cat cba cbb cbc cbd cbe cbi cbm cbo cbr cbt cca ccb ccc ccd cce cci ccm cco ccr cct cda cdb cdc cdd cde cdi cdm cdo cdr cdt ce- cea ceb cec ced cee cei cem ceo cer cet ci- cia cib cic cid cie cii cim cio cir cit cma cmb cmc cmd cme cmi cmm cmo cmr cmt co- coa cob coc cod coe coi com coo cor cot cra crb crc crd cre cri crm cro crr crt cta ctb ctc ctd cte cti ctm cto ctr ctt daa dab dac dad dae dai dam dao dar dat dba dbb dbc dbd dbe dbi dbm dbo dbr dbt dca dcb dcc dcd dce dci dcm dco dcr dct dda ddb ddc ddd dde ddi ddm ddo ddr ddt de- dea deb dec ded dee dei dem deo der det di- dia dib dic did die dii dim dio dir dit dma dmb dmc dmd dme dmi dmm dmo dmr dmt doa dob doc dod doe doi dom doo dor dot dra drb drc drd dre dri drm dro drr drt dta dtb dtc dtd dte dti dtm dto dtr dtt eaa eab eac ead eae eai eam eao ear eat eba ebb ebc ebd ebe ebi ebm ebo ebr ebt ec- eca ecb ecc ecd ece eci ecm eco ecr ect ed- eda edb edc edd ede edi edm edo edr edt eea eeb eec eed eee eem eeo eer eet eia eib eic eid eie eii eim eio eir eit em- ema emb emc emd eme emi emm emo emr emt eo- eoa eob eoc eod eoe eoi eom eoo eor eot era erb erc erd ere eri erm ero err ert eta etb etc etd ete eti etm eto etr ett i-d ia- iaa iab iac iad iae iai iam iao iar iat iba ibb ibc ibd ibe ibi ibm ibo ibr ibt ica icb icc icd ice ici icm ico icr ict ida idb idc idd ide idi idm ido idr idt ie- iea iec ied iee iei iem ier iet iia iib iic iid iie iii iim iio iir iit im- ima imb imc imd ime imi imm imo imt io- ioa iob ioc iod ioe ioi iom ioo ior iot ir- ira irb irc ird ire iri irm iro irr irt ita itb itc itd ite iti itm ito itt m-o m-r maa mab mac mad mae mai mam mao mar mat mba mbb mbc mbd mbe mbi mbm mbo mbr mbt mc- mca mcb mcc mcd mce mci mcm mco mcr mct mda mdb mdc mdd mde mdi mdm mdo mdr mdt mea meb mec med mee mei mem meo mer met mi- mia mib mic mid mie mii mim mio mir mit mma mmb mmc mmd mme mmi mmm mmo mmr mmt moa mob moc mod moe moi mom moo mor mot mra mrb mrc mrd mre mri mrm mro mrr mrt mta mtb mtc mtd mte mti mtm mto mtr mtt o-i oaa oab oac oad oae oai oam oao oar oat ob- oba obb obc obd obe obi obm obo obr obt oc- oca ocb occ ocd oci ocm oco ocr oct oda odb odc odd ode odi odm odo odr odt oea oeb oec oed oee oei oem oeo oer oet oia oib oic oid oie oii oim oio oir oit om- oma omb omc omd ome omi omm omo omr omt oo- ooa oob ooc ood ooi oom ooo oor oot or- ora orb orc ord ore ori orm oro orr ort ot- ota otb otc otd ote oti otm oto otr ott ra- raa rab rac rad rae rai ram rao rar rat rba rbb rbc rbd rbe rbi rbm rbo rbr rbt rca rcb rcc rcd rce rci rcm rco rcr rct rda rdb rdc rdd rde rdi rdm rdo rdr rdt re- rea reb rec red ree rei rem reo rer ret ria rib ric rid rie rii rim rio rir rit rma rmb rmc rmd rme rmi rmm rmo rmr rmt roa rob roc rod roe roi rom roo ror rot rra rrb rrc rrd rri rrm rrr rrt rta rtb rtc rtd rte rti rtm rto rtr rtt taa tab tac tad tae tai tam tao tar tat tba tbb tbc tbd tbe tbi tbm tbo tbr tbt tca tcb tcc tcd tce tci tcm tco tcr tct tda tdb tdc tdd tde tdi tdm tdo tdr tdt te- tea teb tec ted tee tei tem teo ter tet tia tib tic tid tie tii tim tio tir tit tma tmb tmc tmd tme