a-a a-b a-i a-t aaa aab aad aae aaf aai aao aap aas aat ab- aba abb abd abe abf abi abo abp abs abt ad- ada adb add ade adf adi ado adp ads adt aea aeb aed aee aef aei aeo aep aes aet af- afa afb afd afe aff afi afo afp afs aft ai- aia aib aid aie aif aii aio aip ais ait aoa aob aod aoe aof aoi aoo aop aos aot ap- apa apb apd ape apf api apo app aps apt as- asa asb asd ase asf asi aso asp ass ast at- ata atb atd ate atf ati ato atp ats att b-p baa bab bad bae baf bai bao bap bas bat bba bbb bbd bbe bbf bbi bbo bbp bbs bbt bda bdb bdd bde bdf bdi bdo bdp bds bdt be- bea beb bed bee bef bei beo bep bes bet bfa bfb bfd bfe bff bfi bfo bfp bfs bft bi- bia bib bid bie bif bii bio bip bis bit boa bob bod boe bof boi boo bop bos bot bpa bpb bpd bpe bpf bpi bpo bpp bps bpt bsa bsb bsd bse bsf bsi bso bsp bss bst bta btb btd bte btf bti bto btp bts btt daa dab dad dae daf dai dao dap das dat dba dbb dbd dbe dbf dbi dbo dbp dbs dbt dda ddb ddd dde ddf ddi ddo ddp dds ddt de- dea deb ded dee def dei deo dep des det dfa dfb dfd dfe dff dfi dfo dfp dfs dft di- dia dib did die dif dii dio dip dis dit doa dob dod doe dof doi doo dop dos dot dpa dpb dpd dpe dpf dpi dpo dpp dps dpt dsa dsb dsd dse dsf dsi dso dsp dss dst dta dtb dtd dte dtf dti dto dtp dts dtt eaa eab ead eae eaf eai eao eap eas eat eba ebb ebd ebe ebf ebi ebo ebp ebs ebt ed- eda edb edd ede edf edi edo edp eds edt eea eeb eed eee eef eeo eep ees eet ef- efa efb efd efe eff efi efo efp efs eft eia eib eid eie eif eii eio eip eis eit eo- eoa eob eod eoe eof eoi eoo eop eos eot ep- epa epb epd epe epf epi epo epp eps ept es- esa esb esd ese esf esi eso esp ess est eta etb etd ete etf eti eto etp ets ett faa fab fad fae faf fai fao fap fas fat fba fbb fbd fbe fbf fbi fbo fbp fbs fbt fda fdb fdd fde fdf fdi fdo fdp fds fdt fea feb fed fee fef fei feo fep fes fet ffa ffd ffe fff ffi ffo ffp ffs fft fia fib fid fie fif fii fip fis fit foa fob foe fof foi foo fop fos fot fpa fpb fpd fpe fpi fpo fpp fps fpt fsa fsb fsd fse fsf fsi fso fsp fss fst fta ftb ftd fte ftf fti fto ftp fts ftt i-d i-f ia- iaa iab iad iae iaf iai iao iap ias iat iba ibb ibd ibe ibf ibi ibo ibp ibs ibt ida idb idd ide idf idi ido idp ids idt ie- iea ied iee ief iei iep ies iet ifa ifb ifd ife iff ifi ifo ifp ifs ift iia iib iid iie iif iii iio iip iis iit io- ioa iob iod ioe iof ioi ioo iop ios iot ipa ipb ipd ipe ipf ipi ipo ipp ips ipt is- isa isb isd ise isf isi iso isp iss ist ita itb itd ite itf iti ito itp its itt o-i oaa oab oad oae oaf oai oao oap oas oat ob- oba obb obd obe obf obi obo obp obs obt oda odb odd ode odf odi odo odp ods odt oea oeb oed oee oef oei oeo oep oes oet of- ofa ofb ofd ofe off ofi ofo ofp ofs oft oia oib oid oie oif oii oio oip ois oit oo- ooa oob ood oof ooi ooo oop oos oot op- opa opb opd ope opf opi opo opp ops opt os- osa osb osd ose osf osi oso osp oss ost ot- ota otb otd ote otf oti oto otp ots ott p-p paa pab pad pae paf pai pao pap pas pat pba pbb pbd pbe pbf pbi pbo pbp pbs pbt pda pdb pdd pde pdf pdi pdo pdp pds pdt pea peb ped pee pef pei peo pep pes pet pfa pfb pfd pfe pff pfi pfo pfp pfs pft pia pib pid pie pif pii pio pip pis pit poa pob pod poe pof poi poo pop pos pot ppa ppb ppd ppe ppf ppi ppo ppp pps ppt ps- psa psb psd pse psf psi pso psp pss pst pt- pta ptb ptd pte ptf pti pto ptp pts ptt saa sab sad sae saf sai sao sap sas sat sba sbb sbd sbe sbf sbi sbo sbp sbs sbt sda sdb sdd sde sdf sdi sdo sdp sds sdt se- sea seb sed see sef sei seo sep ses set sfa sfb sfd sfe sff sfi sfo sfp sfs sft sia sib sid sie sif sii sio sip sis sit soa sob sod soe sof soi soo sop sos sot spa spb spd spe spf spi spo spp sps spt ss- ssa ssb ssd sse ssf ssi sso ssp sss sst sta stb std ste stf sti sto stp sts stt taa tab tad tae taf tai tao tap tas tat tba tbb tbd tbe tbf tbi tbo tbp tbs tbt tda tdb tdd tde tdf tdi tdo tdp tds tdt te- tea teb ted tee tef tei teo tep tes tet tfa tfb tfd tfe tff tfi tfo tfp tfs tft tia tib tid tie tif tii tio tip tis tit to- toa tob tod toe tof toi too