a-a a-c aaa aac aaf aah aan aao aar aas ac- aca acc acf ach acn aco acr acs af- afa afc aff afh afn afo afr afs aha ahc ahf ahh ahn aho ahr ahs an- ana anc anf anh ann ano anr ans aoa aoc aof aoh aon aoo aor aos ar- ara arc arf arh arn aro arr ars as- asa asc asf ash asn aso asr ass c-- caa cac caf cah can cao car cas cca ccc ccf cch ccn cco ccr ccs cfa cfc cff cfh cfn cfo cfr cfs ch- cha chc chf chh chn cho chr chs cn- cna cnc cnf cnh cnn cno cnr cns co- coa coc cof coh con coo cor cos cra crc crf crh crn cro crr crs csa csc csf csh csn cso csr css faa fac faf fah fan fao far fas fca fcc fcf fcn fco fcr fcs ffa ffc fff ffh ffn ffo ffr ffs fha fhc fhf fhh fhn fho fhr fhs fna fnc fnf fnh fnn fnr fns foa foc fof foh fon foo for fos fra frc frf frh frn fro frr frs fsa fsc fsf fsh fsn fso fsr fss haa hac haf hah han hao har has hca hcc hcf hch hcn hco hcr hcs hfa hfc hff hfh hfn hfo hfr hfs hha hhc hhf hhh hhn hho hhr hhs hna hnc hnf hnh hnn hno hns hoa hoc hof hoh hon hoo hor hos hr- hra hrc hrf hrh hrn hro hrr hrs hsa hsc hsf hsh hsn hsr hss naa nac naf nah nan nao nar nas nca ncc ncf nch ncn nco ncr ncs nfa nfc nff nfn nfo nfr nfs nha nhc nhf nhh nhn nhr nhs nna nnc nnf nnh nnn nno nns no- noa noc nof noh non noo nor nos nra nrc nrf nrn nro nrr nrs nsa nsc nsf nsh nsn nso nsr nss oaa oac oaf oah oan oao oar oas oc- oca occ ocf och ocn oco ocr ocs of- ofa ofc off ofn ofo ofr ofs oha ohc ohf ohh ohn oho ohr ohs on- ona onc onf onh onn ono onr ons oo- ooa ooc oof ooh oon ooo oor oos or- ora orc orf orh orn oro orr ors os- osa osc osf osh osn oso osr oss ra- raa rac raf rah ran rao rar ras rca rcc rcf rch rcn rco rcr rcs rfa rfc rff rfh rfn rfo rfr rfs rh- rha rhc rhf rhh rhn rho rhr rhs rna rnc rnh rnn rno rnr rns roa roc rof roh ron roo ror ros rra rrc rrf rrh rrn rrr rrs rsa rsc rsf rsh rsn rso rsr rss saa sac saf sah san sao sar sas sca scc scf sch scn sco scr scs sfa sfc sff sfh sfn sfo sfr sfs sh- sha shc shf shh shn sho shr shs sna snc snf snn sno snr sns soa soc sof soh son soo sor sos sr- sra src srf srh srn sro srr srs ss- ssa ssc ssf ssh ssn sso ssr sss