-ic a-a a-c a-i aaa aac aad aaf aai aan aao aar aas ac- aca acc acd acf aci acn aco acr acs ad- ada adc add adf adi adn ado adr ads af- afa afc afd aff afi afn afo afr afs ai- aia aic aid aif aii ain aio air ais an- ana anc and anf ani ann ano anr ans aoa aoc aod aof aoi aon aoo aor aos ar- ara arc ard arf ari arn aro arr ars as- asa asc asd asf asi asn aso asr ass c-- caa cac cad caf cai can cao car cas cca ccc ccd ccf cci ccn cco ccr ccs cda cdc cdd cdf cdi cdn cdo cdr cds cfa cfc cfd cff cfi cfn cfo cfr cfs ci- cia cic cid cif cii cin cio cir cis cn- cna cnc cnd cnf cni cnn cno cnr cns co- coa coc cod cof coi con coo cor cos cra crc crd crf cri crn cro crr crs csa csc csd csf csi csn cso csr css daa dac dad daf dai dan dao dar das dca dcc dcd dcf dci dcn dco dcr dcs dda ddc ddd ddf ddi ddn ddo ddr dds dfa dfc dfd dff dfi dfn dfo dfr dfs di- dia dic did dif dii din dio dir dis dna dnc dnd dnf dni dnn dno dnr dns doa doc dod dof doi don doo dor dos dra drc drd dri drn dro drr drs dsa dsc dsd dsf dsi dsn dso dsr dss faa fac fad faf fai fan fao far fas fca fcc fcd fcf fci fcn fco fcr fcs fda fdc fdd fdf fdi fdn fdo fdr fds ffa ffc ffd fff ffi ffn ffo ffr ffs fia fic fid fif fii fin fir fis fna fnc fnd fnf fni fnn fnr fns foa foc fof foi fon foo for fos fra frc frd frf fri frn fro frr frs fsa fsc fsd fsf fsi fsn fso fsr fss i-d i-f ia- iaa iac iad iaf iai ian iao iar ias ica icc icd icf ici icn ico icr ics ida idc idd idf idi idn ido idr ids ifa ifc ifd iff ifi ifn ifo ifr ifs iia iic iid iif iii iin iio iir iis in- ina inc ind inf ini inn ino inr ins io- ioa ioc iod iof ioi ion ioo ior ios ir- ira irc ird irf iri irn iro irr irs is- isa isc isd isf isi isn iso isr iss n-i naa nac nad naf nai nan nao nar nas nca ncc ncd ncf nci ncn nco ncr ncs nda ndc ndd ndf ndi ndn ndo ndr nds nfa nfc nfd nff nfi nfn nfo nfr nfs nia nic nid nif nii nin nio nir nis nna nnc nnf nni nnn nno nns no- noa noc nod nof noi non noo nor nos nra nrc nrd nrf nri nrn nro nrr nrs nsa nsc nsd nsf nsi nsn nso nsr nss o-i oaa oac oad oaf oai oan oao oar oas oc- oca occ ocd ocf oci ocn oco ocr ocs oda odc odd odf odi odn odo odr ods of- ofa ofc ofd off ofi ofn ofo ofr ofs oia oic oid oif oii oin oio oir ois on- ona onc ond onf oni onn ono onr ons oo- ooa ooc ood oof ooi oon ooo oor oos or- ora orc ord orf ori orn oro orr ors os- osa osc osd osf osi osn oso osr oss ra- raa rac rad raf rai ran rao rar ras rca rcc rcd rcf rci rcn rco rcr rcs rda rdc rdd rdf rdi rdn rdo rdr rds rfa rfc rfd rff rfi rfn rfo rfr rfs ria ric rid rif rii rin rio rir ris rna rnc rnd rni rnn rno rnr rns roa roc rod rof roi ron roo ror ros rra rrc rrd rrf rri rrn rrr rrs rsa rsc rsd rsf rsi rsn rso rsr rss saa sac sad saf sai san sao sar sas sca scc scd scf sci scn sco scr scs sda sdc sdd sdf sdi sdn sdo sdr sds sfa sfc sfd sff sfi sfn sfo sfr sfs sia sic sid sif sii sin sio sir sis sna snc snd snf sni snn sno snr sns soa soc sod sof soi son soo sor sos sr- sra src srd srf sri srn sro srr srs ss- ssa ssc ssd ssf ssi ssn sso ssr sss