-er -ic a-a a-c a-i aaa aac aad aae aai aao aap aar aas ac- aca acc acd ace aci aco acp acr acs ad- ada adc add ade adi ado adp adr ads aea aec aed aee aei aeo aep aer aes ai- aia aic aid aie aii aio aip air ais aoa aoc aod aoe aoi aoo aop aor aos ap- apa apc apd ape api apo app apr aps ar- ara arc ard are ari aro arp arr ars as- asa asc asd ase asi aso asp asr ass c-- caa cac cad cae cai cao cap car cas cca ccc ccd cce cci cco ccp ccr ccs cda cdc cdd cde cdi cdo cdp cdr cds ce- cea cec ced cee cei ceo cep cer ces ci- cia cic cid cie cii cio cip cir cis co- coa coc cod coe coi coo cop cor cos cpa cpc cpd cpe cpi cpo cpp cpr cps cra crc crd cre cri cro crp crr crs csa csc csd cse csi cso csp csr css daa dac dad dae dai dao dap dar das dca dcc dcd dce dci dco dcp dcr dcs dda ddc ddd dde ddi ddo ddp ddr dds de- dea dec ded dee dei deo dep der des di- dia dic did die dii dio dip dir dis doa doc dod doe doi doo dop dor dos dpa dpc dpd dpe dpi dpo dpp dpr dps dra drc drd dre dri dro drp drr drs dsa dsc dsd dse dsi dso dsp dsr dss eaa eac ead eae eai eao eap ear eas ec- eca ecc ecd ece eci eco ecr ecs ed- eda edc edd ede edi edo edp edr eds eea eec eed eee eeo eep eer ees eia eic eid eie eii eio eip eir eis eo- eoa eoc eod eoe eoi eoo eop eor eos ep- epa epc epd epe epi epo epp epr eps era erc erd ere eri ero erp err ers es- esa esc esd ese esi eso esp esr ess i-d ia- iaa iac iad iae iai iao iap iar ias ica icc icd ice ici ico icp icr ics ida idc idd ide idi ido idp idr ids ie- iea iec ied iee iei iep ier ies iia iic iid iie iii iio iip iir iis io- ioa ioc iod ioe ioi ioo iop ior ios ipa ipc ipd ipe ipi ipo ipp ipr ips ir- ira irc ird ire iri iro irp irr irs is- isa isc isd ise isi iso isp isr iss o-i oaa oac oad oae oai oao oap oar oas oc- oca occ ocd oci oco ocp ocr ocs oda odc odd ode odi odo odp odr ods oea oec oed oee oei oeo oep oer oes oia oic oid oie oii oio oip oir ois oo- ooa ooc ood ooi ooo oop oor oos op- opa opc opd ope opi opo opp opr ops or- ora orc ord ore ori oro orp orr ors os- osa osc osd ose osi oso osp osr oss p-p paa pac pad pae pai pao pap par pas pca pcc pcd pce pci pco pcp pcr pcs pda pdc pdd pde pdi pdo pdp pdr pds pea pec ped pee pei peo pep per pes pia pic pid pie pii pio pip pir pis poa poc pod poe poi poo pop por pos ppa ppc ppd ppe ppi ppo ppp ppr pps pra prc prd pre pri pro prp prr prs ps- psa psc psd pse psi pso psp psr pss ra- raa rac rad rae rai rao rap rar ras rca rcc rcd rce rci rco rcp rcr rcs rda rdc rdd rde rdi rdo rdp rdr rds re- rea rec red ree rei reo rep rer res ria ric rid rie rii rio rip rir ris roa roc rod roe roi roo rop ror ros rpa rpc rpd rpe rpi rpo rpp rpr rps rra rrc rrd rri rrp rrr rrs rsa rsc rsd rse rsi rso rsp rsr rss saa sac sad sae sai sao sap sar sas sca scc scd sce sci sco scp scr scs sda sdc sdd sde sdi sdo sdp sdr sds se- sea sec sed see sei seo sep ser ses sia sic sid sie sii sio sip sir sis soa soc sod soe soi soo sop sor sos spa spc spd spe spi spo spp spr sps sr- sra src srd sre sri sro srp srr srs ss- ssa ssc ssd sse ssi sso ssp ssr sss