a-a a-b a-i a-t aaa aab aad aag aai aao aas aat ab- aba abb abd abg abi abo abs abt ad- ada adb add adg adi ado ads adt ag- aga agb agd agg agi ago ags agt ai- aia aib aid aig aii aio ais ait aoa aob aod aog aoi aoo aos aot as- asa asb asd asg asi aso ass ast at- ata atb atd atg ati ato ats att baa bab bad bag bai bao bas bat bba bbb bbd bbg bbi bbo bbs bbt bda bdb bdd bdg bdi bdo bds bdt bga bgb bgd bgg bgi bgo bgs bgt bi- bia bib bid big bii bio bis bit boa bob bod bog boi boo bos bot bsa bsb bsd bsg bsi bso bss bst bta btb btd btg bti bto bts btt daa dab dad dag dai dao das dat dba dbb dbd dbg dbi dbo dbs dbt dda ddb ddd ddg ddi ddo dds ddt dga dgd dgg dgi dgs dgt di- dia dib did dig dii dio dis dit doa dob dod dog doi doo dos dot dsa dsb dsd dsg dsi dso dss dst dta dtb dtd dtg dti dto dts dtt g-d gaa gab gad gag gai gao gas gat gba gbd gbg gbi gbo gbs gbt gda gdb gdd gdi gdo gds gdt gga ggb ggd ggg ggi ggo ggs ggt gia gib gid gig gii gio gis git goa gob god gog goi goo gos got gsa gsb gsd gsg gsi gso gss gst gta gtb gtd gtg gti gto gts gtt i-d ia- iaa iab iad iag iai iao ias iat iba ibb ibd ibg ibi ibo ibs ibt ida idb idd idg idi ido ids idt iga igb igd igg igi igo igs igt iia iib iid iii iio iis iit io- ioa iob iod iog ioi ioo ios iot is- isa isb isd isg isi iso iss ist ita itb itd itg iti ito its itt o-i oaa oab oad oag oai oao oas oat ob- oba obb obd obg obi obo obs obt oda odb odd odg odi odo ods odt oga ogd ogg ogi ogo ogs ogt oia oib oid oii oio ois oit oo- ooa oob ood oog ooi ooo oos oot os- osa osb osd osg osi oso oss ost ot- ota otb otd otg oti oto ots ott saa sab sad sag sai sao sas sat sba sbb sbd sbg sbi sbo sbs sbt sda sdb sdd sdg sdi sdo sds sdt sga sgb sgd sgg sgi sgo sgs sgt sia sib sid sig sii sio sis sit soa sob sod sog soi soo sos sot ss- ssa ssb ssd ssg ssi sso sss sst sta stb std stg sti sto sts stt taa tab tad tag tai tao tas tat tba tbb tbd tbg tbi tbo tbs tbt tda tdb tdd tdg tdi tdo tds tdt tga tgb tgg tgi tgo tgs tgt tia tib tid tig tii tio tis tit to- toa tob tod tog toi too tos tot tsa tsb tsd tsg tsi tso tss tst tta ttb ttd ttg tti tto tts ttt