-er -ic a-a a-c a-i aaa aac aad aae aai aap aar aas ac- aca acc acd ace aci acp acr acs ad- ada adc add ade adi adp adr ads aea aec aed aee aei aep aer aes ai- aia aic aid aie aii aip air ais ap- apa apc apd ape api app apr aps ar- ara arc ard are ari arp arr ars as- asa asc asd ase asi asp asr ass c-- caa cac cad cae cai cap car cas cca ccc ccd cce cci ccp ccr ccs cda cdc cdd cde cdi cdp cdr cds ce- cea cec ced cee cei cep cer ces ci- cia cic cid cie cii cip cir cis cpa cpc cpd cpe cpi cpp cpr cps cra crc crd cre cri crp crr crs csa csc csd cse csi csp csr css daa dac dad dae dai dap dar das dca dcc dcd dce dci dcp dcr dcs dda ddc ddd dde ddi ddp ddr dds de- dea dec ded dee dei dep der des di- dia dic did die dii dip dir dis dpa dpc dpd dpe dpi dpp dpr dps dra drc drd dre dri drp drr drs dsa dsc dsd dse dsi dsp dsr dss eaa eac ead eae eai eap ear eas ec- eca ecc ecd ece eci ecr ecs ed- eda edc edd ede edi edp edr eds eea eec eed eee eep eer ees eia eic eid eie eii eip eir eis ep- epa epc epd epe epi epp epr eps era erc erd ere eri erp err ers es- esa esc esd ese esi esp esr ess i-d ia- iaa iac iad iae iai iap iar ias ica icc icd ice ici icp icr ics ida idc idd ide idi idp idr ids ie- iea iec ied iee iei iep ier ies iia iic iid iie iii iip iir iis ipa ipc ipd ipe ipi ipp ipr ips ir- ira irc ird ire iri irp irr irs is- isa isc isd ise isi isp isr iss p-p paa pac pad pae pai pap par pas pca pcc pcd pce pci pcp pcr pcs pda pdc pdd pde pdi pdp pdr pds pea pec ped pee pei pep per pes pia pic pid pie pii pip pir pis ppa ppc ppd ppe ppi ppp ppr pps pra prc prd pre pri prp prr prs ps- psa psc psd pse psi psp psr pss ra- raa rac rad rae rai rap rar ras rca rcc rcd rce rci rcp rcr rcs rda rdc rdd rde rdi rdp rdr rds re- rea rec red ree rei rep rer res ria ric rid rie rii rip rir ris rpa rpc rpd rpe rpi rpp rpr rps rra rrc rrd rri rrp rrr rrs rsa rsc rsd rse rsi rsp rsr rss saa sac sad sae sai sap sar sas sca scc scd sce sci scp scr scs sda sdc sdd sde sdi sdp sdr sds se- sea sec sed see sei sep ser ses sia sic sid sie sii sip sir sis spa spc spd spe spi spp spr sps sr- sra src srd sre sri srp srr srs ss- ssa ssc ssd sse ssi ssp ssr sss