-ic a-a a-c a-i aaa aac aad aai aap aar aas ac- aca acc acd aci acp acr acs ad- ada adc add adi adp adr ads ai- aia aic aid aii aip air ais ap- apa apc apd api app apr aps ar- ara arc ard ari arp arr ars as- asa asc asd asi asp asr ass c-- caa cac cad cai cap car cas cca ccc ccd cci ccp ccr ccs cda cdc cdd cdi cdp cdr cds ci- cia cic cid cii cip cir cis cpa cpc cpd cpi cpp cpr cps cra crc crd cri crp crr crs csa csc csd csi csp csr css daa dac dad dai dap dar das dca dcc dcd dci dcp dcr dcs dda ddc ddd ddi ddp ddr dds di- dia dic did dii dip dir dis dpa dpc dpd dpi dpp dpr dps dra drc drd dri drp drr drs dsa dsc dsd dsi dsp dsr dss i-d ia- iaa iac iad iai iap iar ias ica icc icd ici icp icr ics ida idc idd idi idp idr ids iia iic iid iii iip iir iis ipa ipc ipd ipi ipp ipr ips ir- ira irc ird iri irp irr irs is- isa isc isd isi isp isr iss p-p paa pac pad pai pap par pas pca pcc pcd pci pcp pcr pcs pda pdc pdd pdi pdp pdr pds pia pic pid pii pip pir pis ppa ppc ppd ppi ppp ppr pps pra prc prd pri prp prr prs ps- psa psc psd psi psp psr pss ra- raa rac rad rai rap rar ras rca rcc rcd rci rcp rcr rcs rda rdc rdd rdi rdp rdr rds ria ric rid rii rip rir ris rpa rpc rpd rpi rpp rpr rps rra rrc rrd rri rrp rrr rrs rsa rsc rsd rsi rsp rsr rss saa sac sad sai sap sar sas sca scc scd sci scp scr scs sda sdc sdd sdi sdp sdr sds sia sic sid sii sip sir sis spa spc spd spi spp spr sps sr- sra src srd sri srp srr srs ss- ssa ssc ssd ssi ssp ssr sss