-er a-a a-i aaa aad aae aaf aai aan aap aar aas ad- ada add ade adf adi adn adp adr ads aea aed aee aef aei aen aep aer aes af- afa afd afe aff afi afn afp afr afs ai- aia aid aie aif aii ain aip air ais an- ana and ane anf ani ann anp anr ans ap- apa apd ape apf api apn app apr aps ar- ara ard are arf ari arn arp arr ars as- asa asd ase asf asi asn asp asr ass daa dad dae daf dai dan dap dar das dda ddd dde ddf ddi ddn ddp ddr dds de- dea ded dee def dei den dep der des dfa dfd dfe dff dfi dfn dfp dfr dfs di- dia did die dif dii din dip dir dis dna dnd dne dnf dni dnn dnp dnr dns dpa dpd dpe dpf dpi dpn dpp dpr dps dra drd dre dri drn drp drr drs dsa dsd dse dsf dsi dsn dsp dsr dss eaa ead eae eaf eai ean eap ear eas ed- eda edd ede edf edi edn edp edr eds eea eed eee eef een eep eer ees ef- efa efd efe eff efi efp efr efs eia eid eie eif eii ein eip eir eis en- ena end ene enf eni enn enp enr ens ep- epa epd epe epf epi epn epp epr eps era erd ere erf eri ern erp err ers es- esa esd ese esf esi esn esp esr ess faa fad fae faf fai fan fap far fas fda fdd fde fdf fdi fdn fdp fdr fds fea fed fee fef fei fen fep fer fes ffa ffd ffe fff ffi ffn ffp ffr ffs fia fid fie fif fii fin fip fir fis fna fnd fne fnf fni fnn fnp fnr fns fpa fpd fpe fpi fpn fpp fpr fps fra frd fre frf fri frn frp frr frs fsa fsd fse fsf fsi fsn fsp fsr fss i-d i-f ia- iaa iad iae iaf iai ian iap iar ias ida idd ide idf idi idn idp idr ids ie- iea ied iee ief iei ien iep ier ies ifa ifd ife iff ifi ifn ifp ifr ifs iia iid iie iif iii iin iip iir iis in- ina ind ine inf ini inn inp inr ins ipa ipd ipe ipf ipi ipn ipp ipr ips ir- ira ird ire irf iri irn irp irr irs is- isa isd ise isf isi isn isp isr iss n-i naa nad nae naf nai nan nap nar nas nda ndd nde ndf ndi ndn ndp ndr nds ne- nea ned nee nef nei nen nep ner nes nfa nfd nfe nff nfi nfn nfp nfr nfs nia nid nie nif nii nin nip nir nis nna nne nnf nni nnn nnp nns npa npd npe npf npi npn npp npr nps nra nrd nre nrf nri nrn nrp nrr nrs nsa nsd nse nsf nsi nsn nsp nsr nss p-p paa pad pae paf pai pan pap par pas pda pdd pde pdf pdi pdn pdp pdr pds pea ped pee pef pei pen pep per pes pfa pfd pfe pff pfi pfn pfp pfr pfs pia pid pie pif pii pin pip pir pis pn- pna pnd pne pnf pni pnn pnp pnr pns ppa ppd ppe ppf ppi ppn ppp ppr pps pra prd pre prf pri prn prp prr prs ps- psa psd pse psf psi psn psp psr pss ra- raa rad rae raf rai ran rap rar ras rda rdd rde rdf rdi rdn rdp rdr rds re- rea red ree ref rei ren rep rer res rfa rfd rfe rff rfi rfn rfp rfr rfs ria rid rie rif rii rin rip rir ris rna rnd rni rnn rnp rnr rns rpa rpd rpe rpf rpi rpn rpp rpr rps rra rrd rrf rri rrn rrp rrr rrs rsa rsd rse rsf rsi rsn rsp rsr rss saa sad sae saf sai san sap sar sas sda sdd sde sdf sdi sdn sdp sdr sds se- sea sed see sef sei sen sep ser ses sfa sfd sfe sff sfi sfn sfp sfr sfs sia sid sie sif sii sin sip sir sis sna snd sne snf sni snn snp snr sns spa spd spe spf spi spn spp spr sps sr- sra srd sre srf sri srn srp srr srs ss- ssa ssd sse ssf ssi ssn ssp ssr sss