-er -ic a-a a-b a-c a-i aaa aab aac aad aae aag aah aai aar ab- aba abb abc abd abe abg abh abi abr ac- aca acb acc acd ace acg ach aci acr ad- ada adb adc add ade adg adh adi adr aea aeb aec aed aee aeg aeh aei aer ag- aga agb agc agd age agg agh agi agr aha ahb ahc ahd ahe ahg ahh ahi ahr ai- aia aib aic aid aie aig aih aii air ar- ara arb arc ard are arg arh ari arr baa bab bac bad bae bag bah bai bar bba bbb bbc bbd bbe bbg bbh bbi bbr bca bcb bcc bcd bce bcg bch bci bcr bda bdb bdc bdd bde bdg bdh bdi bdr be- bea beb bec bed bee beg beh bei ber bga bgb bgc bgd bge bgg bgh bgi bgr bha bhb bhc bhd bhe bhg bhh bhi bhr bi- bia bib bic bid bie big bih bii bir bra brb brd bre brg brh bri brr c-- caa cab cac cad cae cag cah cai car cba cbb cbc cbd cbe cbg cbh cbi cbr cca ccb ccc ccd cce ccg cch cci ccr cda cdb cdc cdd cde cdg cdh cdi cdr ce- cea ceb cec ced cee ceg ceh cei cer cga cgb cgc cgd cge cgg cgh cgi cgr ch- cha chb chc chd che chg chh chi chr ci- cia cib cic cid cie cig cih cii cir cra crb crc crd cre crg crh cri crr daa dab dac dad dae dag dah dai dar dba dbb dbc dbd dbe dbg dbh dbi dbr dca dcb dcc dcd dce dcg dci dcr dda ddb ddc ddd dde ddg ddh ddi ddr de- dea deb dec ded dee deg deh dei der dga dgc dgd dge dgg dgh dgi dgr dh- dha dhb dhc dhd dhe dhh dhi dhr di- dia dib dic did die dig dih dii dir dra drb drc drd dre drg dri drr eaa eab eac ead eae eag eah eai ear eba ebb ebc ebd ebe ebg ebh ebi ebr ec- eca ecb ecc ecd ece ecg ech eci ecr ed- eda edb edc edd ede edg edh edi edr eea eeb eec eed eee eeg eer ega egb egc egd ege egg egh egi egr eha ehb ehc ehd ehe ehg ehh ehi ehr eia eib eic eid eie eig eii eir era erb erc erd ere erg erh eri err g-d gaa gab gac gad gae gag gah gai gar gba gbc gbd gbe gbg gbh gbi gbr gca gcb gcc gcd gce gcg gch gci gcr gda gdb gdc gdd gde gdh gdi gdr ge- gea geb gec ged gee geg geh gei ger gga ggb ggc ggd ggg ggh ggi ggr gha ghb ghc ghd ghe ghg ghh ghi ghr gia gib gic gid gie gig gih gii gir gra grb grc grd gre grg grh gri grr h-i haa hab hac had hae hag hah hai har hba hbb hbc hbd hbe hbg hbh hbi hbr hca hcb hcc hcd hce hcg hch hci hcr hda hdb hdc hdd hde hdg hdh hdi hdr he- hea heb hec hed hee heg heh hei her hga hgb hgc hge hgg hgh hgi hgr hha hhb hhc hhd hhe hhg hhh hhi hhr hia hib hic hid hie hig hih hii hir hr- hra hrb hrc hrd hre hrg hrh hri hrr i-d ia- iaa iab iac iad iae iag iah iai iar iba ibb ibc ibd ibe ibg ibh ibi ibr ica icb icc icd ice icg ich ici icr ida idb idc idd ide idg idh idi idr ie- iea iec ied iee ieg iei ier iga igb igc igd ige igg igh igi igr iha ihb ihc ihd ihe ihg ihh ihi ihr iia iib iic iid iie iih iii iir ir- ira irb irc ird ire irg iri irr ra- raa rab rac rad rae rag rah rai rar rba rbb rbc rbd rbe rbg rbh rbi rbr rca rcb rcc rcd rce rcg rch rci rcr rda rdb rdc rdd rde rdg rdh rdi rdr re- rea reb rec red ree reg reh rei rer rga rgb rgc rgd rge rgg rgh rgi rgr rh- rha rhb rhc rhd rhe rhg rhh rhi rhr ria rib ric rid rie rig rih rii rir rra rrb rrc rrd rrg rrh rri rrr