-al -er a-a a-b a-i aaa aab aae aaf aai aal aan aap aar aas ab- aba abb abe abf abi abl abn abp abr abs aea aeb aee aef aei ael aen aep aer aes af- afa afb afe aff afi afl afn afp afr afs ai- aia aib aie aif aii ail ain aip air ais al- ala alb ale alf ali all aln alp alr als an- ana anb ane anf ani anl ann anp anr ans ap- apa apb ape apf api apl apn app apr aps ar- ara arb are arf ari arl arn arp arr ars as- asa asb ase asf asi asl asn asp asr ass b-p baa bab bae baf bai bal ban bap bar bas bba bbb bbe bbf bbi bbl bbn bbp bbr bbs be- bea beb bee bef bei bel ben bep ber bes bfa bfb bfe bff bfi bfl bfn bfp bfr bfs bi- bia bib bie bif bii bil bin bip bir bis bla blb ble blf bli bll bln blp blr bls bna bnb bne bnf bni bnl bnn bnp bnr bns bpa bpb bpe bpf bpi bpl bpn bpp bpr bps bra brb bre brf bri brl brn brp brr brs bsa bsb bse bsf bsi bsl bsn bsp bsr bss eaa eab eae eaf eai eal ean eap ear eas eba ebb ebe ebf ebi ebl ebn ebp ebr ebs eea eeb eee eef eel een eep eer ees ef- efa efb efe eff efi efl efp efr efs eia eib eie eif eii eil ein eip eir eis ela elb ele elf eli ell eln elp elr els en- ena enb ene enf eni enl enn enp enr ens ep- epa epb epe epf epi epl epn epp epr eps era erb ere erf eri erl ern erp err ers es- esa esb ese esf esi esl esn esp esr ess faa fab fae faf fai fal fan fap far fas fba fbb fbe fbf fbi fbl fbn fbp fbr fbs fea feb fee fef fei fel fen fep fer fes ffa ffe fff ffi ffl ffn ffp ffr ffs fia fib fie fif fii fil fin fip fir fis fla flb fle flf fli fll fln flp flr fls fna fnb fne fnf fni fnl fnn fnp fnr fns fpa fpb fpe fpi fpl fpn fpp fpr fps fra frb fre frf fri frl frn frp frr frs fsa fsb fse fsf fsi fsl fsn fsp fsr fss i-f ia- iaa iab iae iaf iai ial ian iap iar ias iba ibb ibe ibf ibi ibl ibn ibp ibr ibs ie- iea iee ief iei iel ien iep ier ies ifa ifb ife iff ifi ifl ifn ifp ifr ifs iia iib iie iif iii iil iin iip iir iis il- ila ilb ile ilf ili ill iln ilp ilr ils in- ina inb ine inf ini inl inn inp inr ins ipa ipb ipe ipf ipi ipl ipn ipp ipr ips ir- ira irb ire irf iri irl irn irp irr irs is- isa isb ise isf isi isl isn isp isr iss l-p la- laa lab lae laf lai lal lan lap lar las lba lbb lbe lbf lbi lbl lbp lbr lbs lea leb lee lef lei lel len lep ler les lfa lfb lfe lff lfi lfl lfn lfp lfr lfs lia lib lie lif lii lil lin lip lir lis lla llb lle llf lli lll lln llp llr lls lna lnb lne lni lnl lnn lnp lnr lns lpa lpb lpe lpf lpi lpl lpn lpp lpr lps lra lrb lrf lri lrn lrp lrr lrs lsa lsb lse lsf lsi lsl lsn lsp lsr lss n-i naa nab nae naf nai nal nan nap nar nas nba nbb nbe nbf nbi nbl nbn nbp nbr nbs ne- nea neb nee nef nei nel nen nep ner nes nfa nfb nfe nff nfi nfl nfn nfp nfr nfs nia nib nie nif nii nil nin nip nir nis nla nlb nle nlf nli nll nln nlp nlr nls nna nnb nne nnf nni nnl nnn nnp nns npa npb npe npf npi npl npn npp npr nps nra nrb nre nrf nri nrl nrn nrp nrr nrs nsa nsb nse nsf nsi nsl nsn nsp nsr nss p-p paa pab pae paf pai pal pan pap par pas pba pbb pbe pbf pbi pbl pbn pbp pbr pbs pea peb pee pef pei pel pen pep per pes pfa pfb pfe pff pfi pfl pfn pfp pfr pfs pia pib pie pif pii pil pin pip pir pis pla plb ple plf pli pll pln plp plr pls pn- pna pnb pne pnf pni pnl pnn pnp pnr pns ppa ppb ppe ppf ppi ppl ppn ppp ppr pps pra prb pre prf pri prl prn prp prr prs ps- psa psb pse psf psi psl psn psp psr pss ra- raa rab rae raf rai ral ran rap rar ras rba rbb rbe rbf rbi rbl rbn rbp rbr rbs re- rea reb ree ref rei rel ren rep rer res rfa rfb rfe rff rfi rfl rfn rfp rfr rfs ria rib rie rif rii ril rin rip rir ris rla rle rlf rli rll rln rlp rlr rls rna rnb rni rnn rnp rnr rns rpa rpb rpe rpf rpi rpl rpn rpp rpr rps rra rrb rrf rri rrl rrn rrp rrr rrs rsa rsb rse rsf rsi rsl rsn rsp rsr rss saa sab sae saf sai sal san sap sar sas sba sbb sbe sbf sbi sbl sbn sbp sbr sbs se- sea seb see sef sei sel sen sep ser ses sfa sfb sfe sff sfi sfl sfn sfp sfr sfs sia sib sie sif sii sil sin sip sir sis sla slb sle slf sli sll sln slp slr sls sna snb sne snf sni snl snn snp snr sns spa spb spe spf spi spl spn spp