-er -ic a-a a-b a-c a-i aaa aab aac aad aae aah aai aar aas ab- aba abb abc abd abe abh abi abr abs ac- aca acb acc acd ace ach aci acr acs ad- ada adb adc add ade adh adi adr ads aea aeb aec aed aee aeh aei aer aes aha ahb ahc ahd ahe ahh ahi ahr ahs ai- aia aib aic aid aie aih aii air ais ar- ara arb arc ard are arh ari arr ars as- asa asb asc asd ase ash asi asr ass baa bab bac bad bae bah bai bar bas bba bbb bbc bbd bbe bbh bbi bbr bbs bca bcb bcc bcd bce bch bci bcr bcs bda bdb bdc bdd bde bdh bdi bdr bds be- bea beb bec bed bee beh bei ber bes bha bhb bhc bhd bhe bhh bhi bhr bhs bi- bia bib bic bid bie bih bii bir bis bra brb brd bre brh bri brr brs bsa bsb bsc bsd bse bsh bsi bsr bss c-- caa cab cac cad cae cah cai car cas cba cbb cbc cbd cbe cbh cbi cbr cbs cca ccb ccc ccd cce cch cci ccr ccs cda cdb cdc cdd cde cdh cdi cdr cds ce- cea ceb cec ced cee ceh cei cer ces ch- cha chb chc chd che chh chi chr chs ci- cia cib cic cid cie cih cii cir cis cra crb crc crd cre crh cri crr crs csa csb csc csd cse csh csi csr css daa dab dac dad dae dah dai dar das dba dbb dbc dbd dbe dbh dbi dbr dbs dca dcb dcc dcd dce dci dcr dcs dda ddb ddc ddd dde ddh ddi ddr dds de- dea deb dec ded dee deh dei der des dh- dha dhb dhc dhd dhe dhh dhi dhr dhs di- dia dib dic did die dih dii dir dis dra drb drc drd dre dri drr drs dsa dsb dsc dsd dse dsh dsi dsr dss eaa eab eac ead eae eah eai ear eas eba ebb ebc ebd ebe ebh ebi ebr ebs ec- eca ecb ecc ecd ece ech eci ecr ecs ed- eda edb edc edd ede edh edi edr eds eea eeb eec eed eee eer ees eha ehb ehc ehd ehe ehh ehi ehr ehs eia eib eic eid eie eii eir eis era erb erc erd ere erh eri err ers es- esa esb esc esd ese esh esi esr ess h-i haa hab hac had hae hah hai har has hba hbb hbc hbd hbe hbh hbi hbr hbs hca hcb hcc hcd hce hch hci hcr hcs hda hdb hdc hdd hde hdh hdi hdr hds he- hea heb hec hed hee heh hei her hes hha hhb hhc hhd hhe hhh hhi hhr hhs hia hib hic hid hie hih hii hir his hr- hra hrb hrc hrd hre hrh hri hrr hrs hsa hsb hsc hsd hse hsh hsi hsr hss i-d ia- iaa iab iac iad iae iah iai iar ias iba ibb ibc ibd ibe ibh ibi ibr ibs ica icb icc icd ice ich ici icr ics ida idb idc idd ide idh idi idr ids ie- iea iec ied iee iei ier ies iha ihb ihc ihd ihe ihh ihi ihr ihs iia iib iic iid iie iih iii iir iis ir- ira irb irc ird ire iri irr irs is- isa isb isc isd ise ish isi isr iss ra- raa rab rac rad rae rah rai rar ras rba rbb rbc rbd rbe rbh rbi rbr rbs rca rcb rcc rcd rce rch rci rcr rcs rda rdb rdc rdd rde rdh rdi rdr rds re- rea reb rec red ree reh rei rer res rh- rha rhb rhc rhd rhe rhh rhi rhr rhs ria rib ric rid rie rih rii rir ris rra rrb rrc rrd rrh rri rrr rrs rsa rsb rsc rsd rse rsh rsi rsr rss saa sab sac sad sae sah sai sar sas sba sbb sbc sbd sbe sbh sbi sbr sbs sca scb scc scd sce sch sci scr scs sda sdb sdc sdd sde sdh sdi sdr sds se- sea seb sec sed see seh sei ser ses sh- sha shb shc shd she shh shi shr shs sia sib sic sid sie sih sii sir sis sr- sra srb src srd sre srh sri srr srs ss- ssa ssb ssc ssd sse ssh ssi ssr sss