-ic a-a a-c a-i aaa aac aad aaf aai aao aar aas ac- aca acc acd acf aci aco acr acs ad- ada adc add adf adi ado adr ads af- afa afc afd aff afi afo afr afs ai- aia aic aid aif aii aio air ais aoa aoc aod aof aoi aoo aor aos ar- ara arc ard arf ari aro arr ars as- asa asc asd asf asi aso asr ass c-- caa cac cad caf cai cao car cas cca ccc ccd ccf cci cco ccr ccs cda cdc cdd cdf cdi cdo cdr cds cfa cfc cfd cff cfi cfo cfr cfs ci- cia cic cid cif cii cio cir cis co- coa coc cod cof coi coo cor cos cra crc crd crf cri cro crr crs csa csc csd csf csi cso csr css daa dac dad daf dai dao dar das dca dcc dcd dcf dci dco dcr dcs dda ddc ddd ddf ddi ddo ddr dds dfa dfc dfd dff dfi dfo dfr dfs di- dia dic did dif dii dio dir dis doa doc dod dof doi doo dor dos dra drc drd dri dro drr drs dsa dsc dsd dsf dsi dso dsr dss faa fac fad faf fai fao far fas fca fcc fcd fcf fci fco fcr fcs fda fdc fdd fdf fdi fdo fdr fds ffa ffc ffd fff ffi ffo ffr ffs fia fic fid fif fii fir fis foa foc fof foi foo for fos fra frc frd frf fri fro frr frs fsa fsc fsd fsf fsi fso fsr fss i-d i-f ia- iaa iac iad iaf iai iao iar ias ica icc icd icf ici ico icr ics ida idc idd idf idi ido idr ids ifa ifc ifd iff ifi ifo ifr ifs iia iic iid iif iii iio iir iis io- ioa ioc iod iof ioi ioo ior ios ir- ira irc ird irf iri iro irr irs is- isa isc isd isf isi iso isr iss o-i oaa oac oad oaf oai oao oar oas oc- oca occ ocd ocf oci oco ocr ocs oda odc odd odf odi odo odr ods of- ofa ofc ofd off ofi ofo ofr ofs oia oic oid oif oii oio oir ois oo- ooa ooc ood oof ooi ooo oor oos or- ora orc ord orf ori oro orr ors os- osa osc osd osf osi oso osr oss ra- raa rac rad raf rai rao rar ras rca rcc rcd rcf rci rco rcr rcs rda rdc rdd rdf rdi rdo rdr rds rfa rfc rfd rff rfi rfo rfr rfs ria ric rid rif rii rio rir ris roa roc rod rof roi roo ror ros rra rrc rrd rrf rri rrr rrs rsa rsc rsd rsf rsi rso rsr rss saa sac sad saf sai sao sar sas sca scc scd scf sci sco scr scs sda sdc sdd sdf sdi sdo sdr sds sfa sfc sfd sff sfi sfo sfr sfs sia sic sid sif sii sio sir sis soa soc sod sof soi soo sor sos sr- sra src srd srf sri sro srr srs ss- ssa ssc ssd ssf ssi sso ssr sss