-er -ic a-a a-c a-i aaa aac aae aaf aai aam aao aar aas ac- aca acc ace acf aci acm aco acr acs aea aec aee aef aei aem aeo aer aes af- afa afc afe aff afi afm afo afr afs ai- aia aic aie aif aii aim aio air ais ama amc ame amf ami amm amo amr ams aoa aoc aoe aof aoi aom aoo aor aos ar- ara arc are arf ari arm aro arr ars as- asa asc ase asf asi asm aso asr ass c-- caa cac cae caf cai cam cao car cas cca ccc cce ccf cci ccm cco ccr ccs ce- cea cec cee cef cei cem ceo cer ces cfa cfc cfe cff cfi cfm cfo cfr cfs ci- cia cic cie cif cii cim cio cir cis cma cmc cme cmf cmi cmm cmo cmr cms co- coa coc coe cof coi com coo cor cos cra crc cre crf cri crm cro crr crs csa csc cse csf csi csm cso csr css eaa eac eae eaf eai eam eao ear eas ec- eca ecc ece ecf eci ecm eco ecr ecs eea eec eee eef eem eeo eer ees ef- efa efc efe eff efi efm efo efr efs eia eic eie eif eii eim eio eir eis em- ema emc eme emf emi emm emo emr ems eo- eoa eoc eoe eof eoi eom eoo eor eos era erc ere erf eri erm ero err ers es- esa esc ese esf esi esm eso esr ess faa fac fae faf fai fam fao far fas fca fcc fce fcf fci fcm fco fcr fcs fea fec fee fef fei fem feo fer fes ffa ffc ffe fff ffi ffm ffo ffr ffs fia fic fie fif fii fim fir fis fma fmc fme fmf fmi fmm fmo fmr fms foa foc foe fof foi fom foo for fos fra frc fre frf fri frm fro frr frs fsa fsc fse fsf fsi fsm fso fsr fss i-f ia- iaa iac iae iaf iai iam iao iar ias ica icc ice icf ici icm ico icr ics ie- iea iec iee ief iei iem ier ies ifa ifc ife iff ifi ifm ifo ifr ifs iia iic iie iif iii iim iio iir iis im- ima imc ime imf imi imm imo ims io- ioa ioc ioe iof ioi iom ioo ior ios ir- ira irc ire irf iri irm iro irr irs is- isa isc ise isf isi ism iso isr iss m-f m-o m-r maa mac mae maf mai mam mao mar mas mc- mca mcc mce mcf mci mcm mco mcr mcs mea mec mee mef mei mem meo mer mes mfa mfc mfe mff mfi mfm mfo mfr mfs mi- mia mic mie mif mii mim mio mir mis mma mmc mme mmf mmi mmm mmo mmr mms moa moc moe mof moi mom moo mor mos mra mrc mre mrf mri mrm mro mrr mrs msa msc mse msf msi msm mso msr mss o-i oaa oac oae oaf oai oam oao oar oas oc- oca occ ocf oci ocm oco ocr ocs oea oec oee oef oei oem oeo oer oes of- ofa ofc ofe off ofi ofm ofo ofr ofs oia oic oie oif oii oim oio oir ois om- oma omc ome omf omi omm omo omr oms oo- ooa ooc oof ooi oom ooo oor oos or- ora orc ore orf ori orm oro orr ors os- osa osc ose osf osi osm oso osr oss ra- raa rac rae raf rai ram rao rar ras rca rcc rce rcf rci rcm rco rcr rcs re- rea rec ree ref rei rem reo rer res rfa rfc rfe rff rfi rfm rfo rfr rfs ria ric rie rif rii rim rio rir ris rma rmc rme rmf rmi rmm rmo rmr rms roa roc roe rof roi rom roo ror ros rra rrc rrf rri rrm rrr rrs rsa rsc rse rsf rsi rsm rso rsr rss saa sac sae saf sai sam sao sar sas sca scc sce scf sci scm sco scr scs se- sea sec see sef sei sem seo ser ses sfa sfc sfe sff sfi sfm sfo sfr sfs sia sic sie sif sii sim sio sir sis sma smc sme smf smi smm smo smr sms soa soc soe sof soi som soo sor sos sr- sra src sre srf sri srm sro srr srs ss- ssa ssc sse ssf ssi ssm sso ssr sss