a-a a-b a-i a-t aaa aab aad aae aai aap aas aat ab- aba abb abd abe abi abp abs abt ad- ada adb add ade adi adp ads adt aea aeb aed aee aei aep aes aet ai- aia aib aid aie aii aip ais ait ap- apa apb apd ape api app aps apt as- asa asb asd ase asi asp ass ast at- ata atb atd ate ati atp ats att b-p baa bab bad bae bai bap bas bat bba bbb bbd bbe bbi bbp bbs bbt bda bdb bdd bde bdi bdp bds bdt be- bea beb bed bee bei bep bes bet bi- bia bib bid bie bii bip bis bit bpa bpb bpd bpe bpi bpp bps bpt bsa bsb bsd bse bsi bsp bss bst bta btb btd bte bti btp bts btt daa dab dad dae dai dap das dat dba dbb dbd dbe dbi dbp dbs dbt dda ddb ddd dde ddi ddp dds ddt de- dea deb ded dee dei dep des det di- dia dib did die dii dip dis dit dpa dpb dpd dpe dpi dpp dps dpt dsa dsb dsd dse dsi dsp dss dst dta dtb dtd dte dti dtp dts dtt eaa eab ead eae eai eap eas eat eba ebb ebd ebe ebi ebp ebs ebt ed- eda edb edd ede edi edp eds edt eea eeb eed eee eep ees eet eia eib eid eie eii eip eis eit ep- epa epb epd epe epi epp eps ept es- esa esb esd ese esi esp ess est eta etb etd ete eti etp ets ett i-d ia- iaa iab iad iae iai iap ias iat iba ibb ibd ibe ibi ibp ibs ibt ida idb idd ide idi idp ids idt ie- iea ied iee iei iep ies iet iia iib iid iie iii iip iis iit ipa ipb ipd ipe ipi ipp ips ipt is- isa isb isd ise isi isp iss ist ita itb itd ite iti itp its itt p-p paa pab pad pae pai pap pas pat pba pbb pbd pbe pbi pbp pbs pbt pda pdb pdd pde pdi pdp pds pdt pea peb ped pee pei pep pes pet pia pib pid pie pii pip pis pit ppa ppb ppd ppe ppi ppp pps ppt ps- psa psb psd pse psi psp pss pst pt- pta ptb ptd pte pti ptp pts ptt saa sab sad sae sai sap sas sat sba sbb sbd sbe sbi sbp sbs sbt sda sdb sdd sde sdi sdp sds sdt se- sea seb sed see sei sep ses set sia sib sid sie sii sip sis sit spa spb spd spe spi spp sps spt ss- ssa ssb ssd sse ssi ssp sss sst sta stb std ste sti stp sts stt taa tab tad tae tai tap tas tat tba tbb tbd tbe tbi tbp tbs tbt tda tdb tdd tde tdi tdp tds tdt te- tea teb ted tee tei tep tes tet tia tib tid tie tii tip tis tit tpa tpb tpd tpe tpi tpp tps tpt tsa tsb tsd tse tsi tsp tss tst tta ttb ttd tte tti ttp tts ttt