-ic a-a a-c a-i aaa aac aad aaf aai aao aap aar aas ac- aca acc acd acf aci aco acp acr acs ad- ada adc add adf adi ado adp adr ads af- afa afc afd aff afi afo afp afr afs ai- aia aic aid aif aii aio aip air ais aoa aoc aod aof aoi aoo aop aor aos ap- apa apc apd apf api apo app apr aps ar- ara arc ard arf ari aro arp arr ars as- asa asc asd asf asi aso asp asr ass c-- caa cac cad caf cai cao cap car cas cca ccc ccd ccf cci cco ccp ccr ccs cda cdc cdd cdf cdi cdo cdp cdr cds cfa cfc cfd cff cfi cfo cfp cfr cfs ci- cia cic cid cif cii cio cip cir cis co- coa coc cod cof coi coo cop cor cos cpa cpc cpd cpf cpi cpo cpp cpr cps cra crc crd crf cri cro crp crr crs csa csc csd csf csi cso csp csr css daa dac dad daf dai dao dap dar das dca dcc dcd dcf dci dco dcp dcr dcs dda ddc ddd ddf ddi ddo ddp ddr dds dfa dfc dfd dff dfi dfo dfp dfr dfs di- dia dic did dif dii dio dip dir dis doa doc dod dof doi doo dop dor dos dpa dpc dpd dpf dpi dpo dpp dpr dps dra drc drd dri dro drp drr drs dsa dsc dsd dsf dsi dso dsp dsr dss faa fac fad faf fai fao fap far fas fca fcc fcd fcf fci fco fcp fcr fcs fda fdc fdd fdf fdi fdo fdp fdr fds ffa ffc ffd fff ffi ffo ffp ffr ffs fia fic fid fif fii fip fir fis foa foc fof foi foo fop for fos fpa fpc fpd fpi fpo fpp fpr fps fra frc frd frf fri fro frp frr frs fsa fsc fsd fsf fsi fso fsp fsr fss i-d i-f ia- iaa iac iad iaf iai iao iap iar ias ica icc icd icf ici ico icp icr ics ida idc idd idf idi ido idp idr ids ifa ifc ifd iff ifi ifo ifp ifr ifs iia iic iid iif iii iio iip iir iis io- ioa ioc iod iof ioi ioo iop ior ios ipa ipc ipd ipf ipi ipo ipp ipr ips ir- ira irc ird irf iri iro irp irr irs is- isa isc isd isf isi iso isp isr iss o-i oaa oac oad oaf oai oao oap oar oas oc- oca occ ocd ocf oci oco ocp ocr ocs oda odc odd odf odi odo odp odr ods of- ofa ofc ofd off ofi ofo ofp ofr ofs oia oic oid oif oii oio oip oir ois oo- ooa ooc ood oof ooi ooo oop oor oos op- opa opc opd opf opi opo opp opr ops or- ora orc ord orf ori oro orp orr ors os- osa osc osd osf osi oso osp osr oss p-p paa pac pad paf pai pao pap par pas pca pcc pcd pcf pci pco pcp pcr pcs pda pdc pdd pdf pdi pdo pdp pdr pds pfa pfc pfd pff pfi pfo pfp pfr pfs pia pic pid pif pii pio pip pir pis poa poc pod pof poi poo pop por pos ppa ppc ppd ppf ppi ppo ppp ppr pps pra prc prd prf pri pro prp prr prs ps- psa psc psd psf psi pso psp psr pss ra- raa rac rad raf rai rao rap rar ras rca rcc rcd rcf rci rco rcp rcr rcs rda rdc rdd rdf rdi rdo rdp rdr rds rfa rfc rfd rff rfi rfo rfp rfr rfs ria ric rid rif rii rio rip rir ris roa roc rod rof roi roo rop ror ros rpa rpc rpd rpf rpi rpo rpp rpr rps rra rrc rrd rrf rri rrp rrr rrs rsa rsc rsd rsf rsi rso rsp rsr rss saa sac sad saf sai sao sap sar sas sca scc scd scf sci sco scp scr scs sda sdc sdd sdf sdi sdo sdp sdr sds sfa sfc sfd sff sfi sfo sfp sfr sfs sia sic sid sif sii sio sip sir sis soa soc sod sof soi soo sop sor sos spa spc spd spf spi spo spp spr sps sr- sra src srd srf sri sro srp srr srs ss- ssa ssc ssd ssf ssi sso ssp ssr sss