-er -ic a-a a-b a-c a-i aaa aab aac aad aae aai aam aao aar ab- aba abb abc abd abe abi abm abo abr ac- aca acb acc acd ace aci acm aco acr ad- ada adb adc add ade adi adm ado adr aea aeb aec aed aee aei aem aeo aer ai- aia aib aic aid aie aii aim aio air ama amb amc amd ame ami amm amo amr aoa aob aoc aod aoe aoi aom aoo aor ar- ara arb arc ard are ari arm aro arr baa bab bac bad bae bai bam bao bar bba bbb bbc bbd bbe bbi bbm bbo bbr bca bcb bcc bcd bce bci bcm bco bcr bda bdb bdc bdd bde bdi bdm bdo bdr be- bea beb bec bed bee bei bem beo ber bi- bia bib bic bid bie bii bim bio bir bma bmb bmc bmd bme bmi bmm bmo bmr boa bob boc bod boe boi bom boo bor bra brb brd bre bri brm bro brr c-- caa cab cac cad cae cai cam cao car cba cbb cbc cbd cbe cbi cbm cbo cbr cca ccb ccc ccd cce cci ccm cco ccr cda cdb cdc cdd cde cdi cdm cdo cdr ce- cea ceb cec ced cee cei cem ceo cer ci- cia cib cic cid cie cii cim cio cir cma cmb cmc cmd cme cmi cmm cmo cmr co- coa cob coc cod coe coi com coo cor cra crb crc crd cre cri crm cro crr daa dab dac dad dae dai dam dao dar dba dbb dbc dbd dbe dbi dbm dbo dbr dca dcb dcc dcd dce dci dcm dco dcr dda ddb ddc ddd dde ddi ddm ddo ddr de- dea deb dec ded dee dei dem deo der di- dia dib dic did die dii dim dio dir dma dmb dmc dmd dme dmi dmm dmo dmr doa dob doc dod doe doi dom doo dor dra drb drc drd dre dri drm dro drr eaa eab eac ead eae eai eam eao ear eba ebb ebc ebd ebe ebi ebm ebo ebr ec- eca ecb ecc ecd ece eci ecm eco ecr ed- eda edb edc edd ede edi edm edo edr eea eeb eec eed eee eem eeo eer eia eib eic eid eie eii eim eio eir em- ema emb emc emd eme emi emm emo emr eo- eoa eob eoc eod eoe eoi eom eoo eor era erb erc erd ere eri erm ero err i-d ia- iaa iab iac iad iae iai iam iao iar iba ibb ibc ibd ibe ibi ibm ibo ibr ica icb icc icd ice ici icm ico icr ida idb idc idd ide idi idm ido idr ie- iea iec ied iee iei iem ier iia iib iic iid iie iii iim iio iir im- ima imb imc imd ime imi imm imo io- ioa iob ioc iod ioe ioi iom ioo ior ir- ira irb irc ird ire iri irm iro irr m-o m-r maa mab mac mad mae mai mam mao mar mba mbb mbc mbd mbe mbi mbm mbo mbr mc- mca mcb mcc mcd mce mci mcm mco mcr mda mdb mdc mdd mde mdi mdm mdo mdr mea meb mec med mee mei mem meo mer mi- mia mib mic mid mie mii mim mio mir mma mmb mmc mmd mme mmi mmm mmo mmr moa mob moc mod moe moi mom moo mor mra mrb mrc mrd mre mri mrm mro mrr o-i oaa oab oac oad oae oai oam oao oar ob- oba obb obc obd obe obi obm obo obr oc- oca ocb occ ocd oci ocm oco ocr oda odb odc odd ode odi odm odo odr oea oeb oec oed oee oei oem oeo oer oia oib oic oid oie oii oim oio oir om- oma omb omc omd ome omi omm omo omr oo- ooa oob ooc ood ooi oom ooo oor or- ora orb orc ord ore ori orm oro orr ra- raa rab rac rad rae rai ram rao rar rba rbb rbc rbd rbe rbi rbm rbo rbr rca rcb rcc rcd rce rci rcm rco rcr rda rdb rdc rdd rde rdi rdm rdo rdr re- rea reb rec red ree rei rem reo rer ria rib ric rid rie rii rim rio rir rma rmb rmc rmd rme rmi rmm rmo rmr roa rob roc rod roe roi rom roo ror rra rrb rrc rrd rri rrm rrr