a-a a-b a-i a-t aaa aab aae aaf aai aan aao aap aas aat ab- aba abb abe abf abi abn abo abp abs abt aea aeb aee aef aei aen aeo aep aes aet af- afa afb afe aff afi afn afo afp afs aft ai- aia aib aie aif aii ain aio aip ais ait an- ana anb ane anf ani ann ano anp ans ant aoa aob aoe aof aoi aon aoo aop aos aot ap- apa apb ape apf api apn apo app aps apt as- asa asb ase asf asi asn aso asp ass ast at- ata atb ate atf ati atn ato atp ats att b-p baa bab bae baf bai ban bao bap bas bat bba bbb bbe bbf bbi bbn bbo bbp bbs bbt be- bea beb bee bef bei ben beo bep bes bet bfa bfb bfe bff bfi bfn bfo bfp bfs bft bi- bia bib bie bif bii bin bio bip bis bit bna bnb bne bnf bni bnn bno bnp bns bnt boa bob boe bof boi bon boo bop bos bot bpa bpb bpe bpf bpi bpn bpo bpp bps bpt bsa bsb bse bsf bsi bsn bso bsp bss bst bta btb bte btf bti btn bto btp bts btt eaa eab eae eaf eai ean eao eap eas eat eba ebb ebe ebf ebi ebn ebo ebp ebs ebt eea eeb eee eef een eeo eep ees eet ef- efa efb efe eff efi efo efp efs eft eia eib eie eif eii ein eio eip eis eit en- ena enb ene enf eni enn eno enp ens ent eo- eoa eob eoe eof eoi eon eoo eop eos eot ep- epa epb epe epf epi epn epo epp eps ept es- esa esb ese esf esi esn eso esp ess est eta etb ete etf eti etn eto etp ets ett faa fab fae faf fai fan fao fap fas fat fba fbb fbe fbf fbi fbn fbo fbp fbs fbt fea feb fee fef fei fen feo fep fes fet ffa ffe fff ffi ffn ffo ffp ffs fft fia fib fie fif fii fin fip fis fit fna fnb fne fnf fni fnn fnp fns fnt foa fob foe fof foi fon foo fop fos fot fpa fpb fpe fpi fpn fpo fpp fps fpt fsa fsb fse fsf fsi fsn fso fsp fss fst fta ftb fte ftf fti ftn fto ftp fts ftt i-f ia- iaa iab iae iaf iai ian iao iap ias iat iba ibb ibe ibf ibi ibn ibo ibp ibs ibt ie- iea iee ief iei ien iep ies iet ifa ifb ife iff ifi ifn ifo ifp ifs ift iia iib iie iif iii iin iio iip iis iit in- ina inb ine inf ini inn ino inp ins int io- ioa iob ioe iof ioi ion ioo iop ios iot ipa ipb ipe ipf ipi ipn ipo ipp ips ipt is- isa isb ise isf isi isn iso isp iss ist ita itb ite itf iti itn ito itp its itt n-i naa nab nae naf nai nan nao nap nas nat nba nbb nbe nbf nbi nbn nbo nbp nbs nbt ne- nea neb nee nef nei nen neo nep nes net nfa nfb nfe nff nfi nfn nfo nfp nfs nft nia nib nie nif nii nin nio nip nis nit nna nnb nne nnf nni nnn nno nnp nns nnt no- noa nob noe nof noi non noo nop nos not npa npb npe npf npi npn npo npp nps npt nsa nsb nse nsf nsi nsn nso nsp nss nst nta ntb nte ntf nti ntn nto ntp nts ntt o-i oaa oab oae oaf oai oan oao oap oas oat ob- oba obb obe obf obi obn obo obp obs obt oea oeb oee oef oei oen oeo oep oes oet of- ofa ofb ofe off ofi ofn ofo ofp ofs oft oia oib oie oif oii oin oio oip ois oit on- ona onb one onf oni onn ono onp ons ont oo- ooa oob oof ooi oon ooo oop oos oot op- opa opb ope opf opi opn opo opp ops opt os- osa osb ose osf osi osn oso osp oss ost ot- ota otb ote otf oti otn oto otp ots ott p-p paa pab pae paf pai pan pao pap pas pat pba pbb pbe pbf pbi pbn pbo pbp pbs pbt pea peb pee pef pei pen peo pep pes pet pfa pfb pfe pff pfi pfn pfo pfp pfs pft pia pib pie pif pii pin pio pip pis pit pn- pna pnb pne pnf pni pnn pno pnp pns pnt poa pob poe pof poi pon poo pop pos pot ppa ppb ppe ppf ppi ppn ppo ppp pps ppt ps- psa psb pse psf psi psn pso psp pss pst pt- pta ptb pte ptf pti ptn pto ptp pts ptt saa sab sae saf sai san sao sap sas sat sba sbb sbe sbf sbi sbn sbo sbp sbs sbt se- sea seb see sef sei sen seo sep ses set sfa sfb sfe sff sfi sfn sfo sfp sfs sft sia sib sie sif sii sin sio sip sis sit sna snb sne snf sni snn sno snp sns snt soa sob soe sof soi son soo sop sos sot spa spb spe spf spi spn spo spp sps spt ss- ssa ssb sse ssf ssi ssn sso ssp sss sst sta stb ste stf sti stn sto stp sts stt taa tab tae taf tai tan tao tap tas tat tba tbb tbe tbf tbi tbn tbo tbp tbs tbt te- tea teb tee tef tei ten teo tep tes tet tfa tfb tfe tff tfi tfn tfo tfp tfs tft tia tib tie tif tii tin tio tip tis tit tna tnb tne tnf tni tnn tno tnp tns tnt to- toa tob toe tof toi