-ic a-a a-c a-i aaa aac aaf aai aan aao aar aas ac- aca acc acf aci acn aco acr acs af- afa afc aff afi afn afo afr afs ai- aia aic aif aii ain aio air ais an- ana anc anf ani ann ano anr ans aoa aoc aof aoi aon aoo aor aos ar- ara arc arf ari arn aro arr ars as- asa asc asf asi asn aso asr ass c-- caa cac caf cai can cao car cas cca ccc ccf cci ccn cco ccr ccs cfa cfc cff cfi cfn cfo cfr cfs ci- cia cic cif cii cin cio cir cis cn- cna cnc cnf cni cnn cno cnr cns co- coa coc cof coi con coo cor cos cra crc crf cri crn cro crr crs csa csc csf csi csn cso csr css faa fac faf fai fan fao far fas fca fcc fcf fci fcn fco fcr fcs ffa ffc fff ffi ffn ffo ffr ffs fia fic fif fii fin fir fis fna fnc fnf fni fnn fnr fns foa foc fof foi fon foo for fos fra frc frf fri frn fro frr frs fsa fsc fsf fsi fsn fso fsr fss i-f ia- iaa iac iaf iai ian iao iar ias ica icc icf ici icn ico icr ics ifa ifc iff ifi ifn ifo ifr ifs iia iic iif iii iin iio iir iis in- ina inc inf ini inn ino inr ins io- ioa ioc iof ioi ion ioo ior ios ir- ira irc irf iri irn iro irr irs is- isa isc isf isi isn iso isr iss n-i naa nac naf nai nan nao nar nas nca ncc ncf nci ncn nco ncr ncs nfa nfc nff nfi nfn nfo nfr nfs nia nic nif nii nin nio nir nis nna nnc nnf nni nnn nno nns no- noa noc nof noi non noo nor nos nra nrc nrf nri nrn nro nrr nrs nsa nsc nsf nsi nsn nso nsr nss o-i oaa oac oaf oai oan oao oar oas oc- oca occ ocf oci ocn oco ocr ocs of- ofa ofc off ofi ofn ofo ofr ofs oia oic oif oii oin oio oir ois on- ona onc onf oni onn ono onr ons oo- ooa ooc oof ooi oon ooo oor oos or- ora orc orf ori orn oro orr ors os- osa osc osf osi osn oso osr oss ra- raa rac raf rai ran rao rar ras rca rcc rcf rci rcn rco rcr rcs rfa rfc rff rfi rfn rfo rfr rfs ria ric rif rii rin rio rir ris rna rnc rni rnn rno rnr rns roa roc rof roi ron roo ror ros rra rrc rrf rri rrn rrr rrs rsa rsc rsf rsi rsn rso rsr rss saa sac saf sai san sao sar sas sca scc scf sci scn sco scr scs sfa sfc sff sfi sfn sfo sfr sfs sia sic sif sii sin sio sir sis sna snc snf sni snn sno snr sns soa soc sof soi son soo sor sos sr- sra src srf sri srn sro srr srs ss- ssa ssc ssf ssi ssn sso ssr sss