a-a a-b a-t aaa aab aae aag aak aan aao aas aat ab- aba abb abe abg abk abn abo abs abt aea aeb aee aeg aek aen aeo aes aet ag- aga agb age agg agk agn ago ags agt aka akb ake akg akk akn ako aks an- ana anb ane ang ank ann ano ans ant aoa aob aoe aog aok aon aoo aos aot as- asa asb ase asg ask asn aso ass ast at- ata atb ate atg atn ato ats att baa bab bae bag bak ban bao bas bat bba bbb bbe bbg bbk bbn bbo bbs bbt be- bea beb bee beg bek ben beo bes bet bga bgb bge bgg bgk bgn bgo bgs bgt bka bkb bke bkg bkk bkn bko bks bkt bna bnb bne bng bnk bnn bno bns bnt boa bob boe bog bok bon boo bos bot bsa bsb bse bsg bsk bsn bso bss bst bta btb bte btg btk btn bto bts btt eaa eab eae eag eak ean eao eas eat eba ebb ebe ebg ebk ebn ebo ebs ebt eea eeb eee eeg eek een eeo ees eet ega egb ege egg egn ego egs egt eka ekb eke ekg eko eks ekt en- ena enb ene eng enk enn eno ens ent eo- eoa eob eoe eog eok eon eoo eos eot es- esa esb ese esg esk esn eso ess est eta etb ete etg etk etn eto ets ett gaa gab gae gag gak gan gao gas gat gba gbe gbg gbk gbn gbo gbs gbt ge- gea geb gee geg gek gen geo ges get gga ggb ggg ggn ggo ggs ggt gka gkb gkn gko gks gkt gna gnb gne gnn gno gns gnt goa gob goe gog gok gon goo gos got gsa gsb gse gsg gsk gsn gso gss gst gta gtb gte gtg gtk gtn gto gts gtt k-t ka- kaa kab kae kag kak kan kao kas kat kba kbb kbe kbk kbn kbo kbs ke- kea keb kee keg kek ken keo kes ket kga kgb kgo kgs kkb kke kkk kkn kks kkt kn- kna kne kng knk knn kno knt koa kob koe kog kok kon koo kos kot ksa ksb kse ksg ksk ksn kso kss kst kta ktb kte ktg ktk ktn kto kts ktt naa nab nae nag nak nan nao nas nat nba nbb nbe nbg nbk nbn nbo nbs nbt ne- nea neb nee neg nek nen neo nes net nga ngb nge ngg ngk ngn ngo ngs ngt nka nke nkk nkn nko nks nkt nna nnb nne nng nnk nnn nno nns nnt no- noa nob noe nog nok non noo nos not nsa nsb nse nsg nsk nsn nso nss nst nta ntb nte ntg ntk ntn nto nts ntt oaa oab oae oag oak oan oao oas oat ob- oba obb obe obg obk obn obo obs obt oea oeb oee oeg oen oeo oes oet oga oge ogg ogn ogo ogs ogt oka okb oke okg okk oko oks on- ona onb one ong onk onn ono ons ont oo- ooa oob oog ook oon ooo oos oot os- osa osb ose osg osk osn oso oss ost ot- ota otb ote otg otk otn oto ots ott saa sab sae sag sak san sao sas sat sba sbb sbe sbg sbk sbn sbo sbs sbt se- sea seb see seg sek sen seo ses set sga sgb sge sgg sgk sgn sgo sgs sgt sk- ska skb ske skg skk sko sks skt sna snb sne sng snk snn sno sns snt soa sob soe sog sok son soo sos sot ss- ssa ssb sse ssg ssk ssn sso sss sst sta stb ste stg stk stn sto sts stt taa tab tae tag tak tan tao tas tat tba tbb tbe tbg tbk tbn tbo tbs tbt te- tea teb tee teg tek ten teo tes tet tga tgb tge tgg tgk tgn tgo tgs tgt tka tkb tke tkg tkk tko tks tkt tna tnb tne tng tnk tnn tno tns tnt to- toa tob toe tog tok ton too tos tot tsa tsb tse tsg tsk tsn tso tss tst tta ttb tte ttg ttk ttn tto tts ttt