-er -ic a-a a-b a-c a-i aaa aab aac aad aae aag aai aam aar ab- aba abb abc abd abe abg abi abm abr ac- aca acb acc acd ace acg aci acm acr ad- ada adb adc add ade adg adi adm adr aea aeb aec aed aee aeg aei aem aer ag- aga agb agc agd age agg agi agm agr ai- aia aib aic aid aie aig aii aim air ama amb amc amd ame amg ami amm amr ar- ara arb arc ard are arg ari arm arr baa bab bac bad bae bag bai bam bar bba bbb bbc bbd bbe bbg bbi bbm bbr bca bcb bcc bcd bce bcg bci bcm bcr bda bdb bdc bdd bde bdg bdi bdm bdr be- bea beb bec bed bee beg bei bem ber bga bgb bgc bgd bge bgg bgi bgm bgr bi- bia bib bic bid bie big bii bim bir bma bmb bmc bmd bme bmg bmi bmm bmr bra brb brd bre brg bri brm brr c-- caa cab cac cad cae cag cai cam car cba cbb cbc cbd cbe cbg cbi cbm cbr cca ccb ccc ccd cce ccg cci ccm ccr cda cdb cdc cdd cde cdg cdi cdm cdr ce- cea ceb cec ced cee ceg cei cem cer cga cgb cgc cgd cge cgg cgi cgm cgr ci- cia cib cic cid cie cig cii cim cir cma cmb cmc cmd cme cmg cmi cmm cmr cra crb crc crd cre crg cri crm crr daa dab dac dad dae dag dai dam dar dba dbb dbc dbd dbe dbg dbi dbm dbr dca dcb dcc dcd dce dcg dci dcm dcr dda ddb ddc ddd dde ddg ddi ddm ddr de- dea deb dec ded dee deg dei dem der dga dgc dgd dge dgg dgi dgm dgr di- dia dib dic did die dig dii dim dir dma dmb dmc dmd dme dmg dmi dmm dmr dra drb drc drd dre drg dri drm drr eaa eab eac ead eae eag eai eam ear eba ebb ebc ebd ebe ebg ebi ebm ebr ec- eca ecb ecc ecd ece ecg eci ecm ecr ed- eda edb edc edd ede edg edi edm edr eea eeb eec eed eee eeg eem eer ega egb egc egd ege egg egi egm egr eia eib eic eid eie eig eii eim eir em- ema emb emc emd eme emg emi emm emr era erb erc erd ere erg eri erm err g-d gaa gab gac gad gae gag gai gam gar gba gbc gbd gbe gbg gbi gbm gbr gca gcb gcc gcd gce gcg gci gcm gcr gda gdb gdc gdd gde gdi gdm gdr ge- gea geb gec ged gee geg gei gem ger gga ggb ggc ggd ggg ggi ggm ggr gia gib gic gid gie gig gii gim gir gma gmb gmc gmd gme gmg gmi gmm gmr gra grb grc grd gre grg gri grm grr i-d ia- iaa iab iac iad iae iag iai iam iar iba ibb ibc ibd ibe ibg ibi ibm ibr ica icb icc icd ice icg ici icm icr ida idb idc idd ide idg idi idm idr ie- iea iec ied iee ieg iei iem ier iga igb igc igd ige igg igi igm igr iia iib iic iid iie iii iim iir im- ima imb imc imd ime img imi imm ir- ira irb irc ird ire irg iri irm irr m-r maa mab mac mad mae mag mai mam mar mba mbb mbc mbd mbe mbg mbi mbm mbr mc- mca mcb mcc mcd mce mcg mci mcm mcr mda mdb mdc mdd mde mdg mdi mdm mdr mea meb mec med mee meg mei mem mer mga mgb mgc mgd mge mgi mgm mgr mi- mia mib mic mid mie mig mii mim mir mma mmb mmc mmd mme mmg mmi mmm mmr mra mrb mrc mrd mre mrg mri mrm mrr ra- raa rab rac rad rae rag rai ram rar rba rbb rbc rbd rbe rbg rbi rbm rbr rca rcb rcc rcd rce rcg rci rcm rcr rda rdb rdc rdd rde rdg rdi rdm rdr re- rea reb rec red ree reg rei rem rer rga rgb rgc rgd rge rgg rgi rgr ria rib ric rid rie rig rii rim rir rma rmb rmc rmd rme rmg rmi rmm rmr rra rrb rrc rrd rrg rri rrm rrr