a-a a-b a-t aaa aab aad aae aag aan aao aas aat ab- aba abb abd abe abg abn abo abs abt ad- ada adb add ade adg adn ado ads adt aea aeb aed aee aeg aen aeo aes aet ag- aga agb agd age agg agn ago ags agt an- ana anb and ane ang ann ano ans ant aoa aob aod aoe aog aon aoo aos aot as- asa asb asd ase asg asn aso ass ast at- ata atb atd ate atg atn ato ats att baa bab bad bae bag ban bao bas bat bba bbb bbd bbe bbg bbn bbo bbs bbt bda bdb bdd bde bdg bdo bds bdt be- bea beb bed bee beg ben beo bes bet bga bgb bgd bge bgg bgn bgo bgs bgt bna bnb bnd bne bng bnn bno bns bnt boa bob bod boe bog bon boo bos bot bsa bsb bsd bse bsg bsn bso bss bst bta btb btd bte btg btn bto bts btt daa dab dad dae dag dan dao das dat dba dbb dbd dbe dbg dbn dbo dbs dbt dda ddb ddd dde ddg ddn ddo dds ddt de- dea deb ded dee deg den deo des det dga dgd dge dgg dgn dgs dgt dna dnb dnd dne dng dnn dno dns dnt doa dob dod doe dog don doo dos dot dsa dsb dsd dse dsg dsn dso dss dst dta dtb dtd dte dtg dtn dto dts dtt eaa eab ead eae eag ean eao eas eat eba ebb ebd ebe ebg ebn ebo ebs ebt ed- eda edb edd ede edg edn edo eds edt eea eeb eed eee eeg een eeo ees eet ega egb egd ege egg egn ego egs egt en- ena enb end ene eng enn eno ens ent eo- eoa eob eod eoe eog eon eoo eos eot es- esa esb esd ese esg esn eso ess est eta etb etd ete etg etn eto ets ett g-d gaa gab gad gae gag gan gao gas gat gba gbd gbe gbg gbn gbo gbs gbt gda gdb gdd gde gdn gdo gds gdt ge- gea geb ged gee geg gen geo ges get gga ggb ggd ggg ggn ggo ggs ggt gna gnb gnd gne gnn gno gns gnt goa gob god goe gog gon goo gos got gsa gsb gsd gse gsg gsn gso gss gst gta gtb gtd gte gtg gtn gto gts gtt naa nab nad nae nag nan nao nas nat nba nbb nbd nbe nbg nbn nbo nbs nbt nda ndb ndd nde ndg ndn ndo nds ndt ne- nea neb ned nee neg nen neo nes net nga ngb ngd nge ngg ngn ngo ngs ngt nna nnb nne nng nnn nno nns nnt no- noa nob nod noe nog non noo nos not nsa nsb nsd nse nsg nsn nso nss nst nta ntb ntd nte ntg ntn nto nts ntt oaa oab oad oae oag oan oao oas oat ob- oba obb obd obe obg obn obo obs obt oda odb odd ode odg odn odo ods odt oea oeb oed oee oeg oen oeo oes oet oga ogd oge ogg ogn ogo ogs ogt on- ona onb ond one ong onn ono ons ont oo- ooa oob ood oog oon ooo oos oot os- osa osb osd ose osg osn oso oss ost ot- ota otb otd ote otg otn oto ots ott saa sab sad sae sag san sao sas sat sba sbb sbd sbe sbg sbn sbo sbs sbt sda sdb sdd sde sdg sdn sdo sds sdt se- sea seb sed see seg sen seo ses set sga sgb sgd sge sgg sgn sgo sgs sgt sna snb snd sne sng snn sno sns snt soa sob sod soe sog son soo sos sot ss- ssa ssb ssd sse ssg ssn sso sss sst sta stb std ste stg stn sto sts stt taa tab tad tae tag tan tao tas tat tba tbb tbd tbe tbg tbn tbo tbs tbt tda tdb tdd tde tdg tdn tdo tds tdt te- tea teb ted tee teg ten teo tes tet tga tgb tge tgg tgn tgo tgs tgt tna tnb tnd tne tng tnn tno tns tnt to- toa tob tod toe tog ton too tos tot tsa tsb tsd tse tsg tsn tso tss tst tta ttb ttd tte ttg ttn tto tts ttt