-al -ol a-a a-b a-i aaa aab aae aaf aai aal aan aao aap aas ab- aba abb abe abf abi abl abn abo abp abs aea aeb aee aef aei ael aen aeo aep aes af- afa afb afe aff afi afl afn afo afp afs ai- aia aib aie aif aii ail ain aio aip ais al- ala alb ale alf ali all aln alo alp als an- ana anb ane anf ani anl ann ano anp ans aoa aob aoe aof aoi aol aon aoo aop aos ap- apa apb ape apf api apl apn apo app aps as- asa asb ase asf asi asl asn aso asp ass b-p baa bab bae baf bai bal ban bao bap bas bba bbb bbe bbf bbi bbl bbn bbo bbp bbs be- bea beb bee bef bei bel ben beo bep bes bfa bfb bfe bff bfi bfl bfn bfo bfp bfs bi- bia bib bie bif bii bil bin bio bip bis bla blb ble blf bli bll bln blo blp bls bna bnb bne bnf bni bnl bnn bno bnp bns boa bob boe bof boi bol bon boo bop bos bpa bpb bpe bpf bpi bpl bpn bpo bpp bps bsa bsb bse bsf bsi bsl bsn bso bsp bss eaa eab eae eaf eai eal ean eao eap eas eba ebb ebe ebf ebi ebl ebn ebo ebp ebs eea eeb eee eef eel een eeo eep ees ef- efa efb efe eff efi efl efo efp efs eia eib eie eif eii eil ein eio eip eis ela elb ele elf eli ell eln elo elp els en- ena enb ene enf eni enl enn eno enp ens eo- eoa eob eoe eof eoi eol eon eoo eop eos ep- epa epb epe epf epi epl epn epo epp eps es- esa esb ese esf esi esl esn eso esp ess faa fab fae faf fai fal fan fao fap fas fba fbb fbe fbf fbi fbl fbn fbo fbp fbs fea feb fee fef fei fel fen feo fep fes ffa ffe fff ffi ffl ffn ffo ffp ffs fia fib fie fif fii fil fin fip fis fla flb fle flf fli fll fln flo flp fls fna fnb fne fnf fni fnl fnn fnp fns foa fob foe fof foi fol fon foo fop fos fpa fpb fpe fpi fpl fpn fpo fpp fps fsa fsb fse fsf fsi fsl fsn fso fsp fss i-f ia- iaa iab iae iaf iai ial ian iao iap ias iba ibb ibe ibf ibi ibl ibn ibo ibp ibs ie- iea iee ief iei iel ien iep ies ifa ifb ife iff ifi ifl ifn ifo ifp ifs iia iib iie iif iii iil iin iio iip iis il- ila ilb ile ilf ili ill iln ilo ilp ils in- ina inb ine inf ini inl inn ino inp ins io- ioa iob ioe iof ioi iol ion ioo iop ios ipa ipb ipe ipf ipi ipl ipn ipo ipp ips is- isa isb ise isf isi isl isn iso isp iss l-p la- laa lab lae laf lai lal lan lao lap las lba lbb lbe lbf lbi lbl lbo lbp lbs lea leb lee lef lei lel len leo lep les lfa lfb lfe lff lfi lfl lfn lfo lfp lfs lia lib lie lif lii lil lin lio lip lis lla llb lle llf lli lll lln llo llp lls lna lnb lne lni lnl lnn lno lnp lns loa lob loe lof loi lol lon loo lop los lpa lpb lpe lpf lpi lpl lpn lpo lpp lps lsa lsb lse lsf lsi lsl lsn lso lsp lss n-i naa nab nae naf nai nal nan nao nap nas nba nbb nbe nbf nbi nbl nbn nbo nbp nbs ne- nea neb nee nef nei nel nen neo nep nes nfa nfb nfe nff nfi nfl nfn nfo nfp nfs nia nib nie nif nii nil nin nio nip nis nla nlb nle nlf nli nll nln nlo nlp nls nna nnb nne nnf nni nnl nnn nno nnp nns no- noa nob noe nof noi nol non noo nop nos npa npb npe npf npi npl npn npo npp nps nsa nsb nse nsf nsi nsl nsn nso nsp nss o-i oaa oab oae oaf oai oal oan oao oap oas ob- oba obb obe obf obi obl obn obo obp obs oea oeb oee oef oei oel oen oeo oep oes of- ofa ofb ofe off ofi ofl ofn ofo ofp ofs oia oib oie oif oii oil oin oio oip ois ola olb ole olf oli oll oln olo olp ols on- ona onb one onf oni onl onn ono onp ons oo- ooa oob oof ooi ool oon ooo oop oos op- opa opb ope opf opi opl opn opo opp ops os- osa osb ose osf osi osl osn oso osp oss p-p paa pab pae paf pai pal pan pao pap pas pba pbb pbe pbf pbi pbl pbn pbo pbp pbs pea peb pee pef pei pel pen peo pep pes pfa pfb pfe pff pfi pfl pfn pfo pfp pfs pia pib pie pif pii pil pin pio pip pis pla plb ple plf pli pll pln plo plp pls pn- pna pnb pne pnf pni pnl pnn pno pnp pns poa pob poe pof poi pol pon poo pop pos ppa ppb ppe ppf ppi ppl ppn ppo ppp pps ps- psa psb pse psf psi psl psn pso psp pss saa sab sae saf sai sal san sao sap sas sba sbb sbe sbf sbi sbl sbn sbo sbp sbs se- sea seb see sef sei sel sen seo sep ses sfa sfb sfe sff sfi sfl sfn sfo sfp sfs sia sib sie sif sii sil sin sio sip sis sla slb sle slf sli sll sln slo slp sls sna snb sne snf sni snl snn sno