-th a-a a-b a-c a-t aaa aab aac aaf aag aah aak aao aat aau ab- aba abb abc abf abg abh abk abo abt abu ac- aca acb acc acf acg ach ack aco act acu af- afa afb afc aff afg afh afk afo aft afu ag- aga agb agc agf agg agh agk ago agt agu aha ahb ahc ahf ahg ahh ahk aho aht ahu aka akb akc akg akh akk ako aku aoa aob aoc aof aog aoh aok aoo aot aou at- ata atb atc atf atg ath ato att atu au- aua aub auc auf aug auh auk auo aut b-u baa bab bac baf bag bah bak bao bat bau bba bbb bbc bbf bbg bbh bbk bbo bbt bbu bca bcb bcc bcf bcg bch bck bco bct bcu bfa bfb bfc bff bfg bfh bfo bft bfu bga bgb bgc bgf bgg bgh bgk bgo bgt bgu bha bhb bhc bhf bhg bhh bhk bho bht bhu bka bkb bkc bkf bkg bkk bko bkt boa bob boc bof bog boh bok boo bot bou bta btb btc btf btg bth btk bto btt btu bua bub buc buf bug buh buk buo but buu c-- caa cab cac caf cag cah cak cao cat cau cba cbb cbc cbf cbg cbh cbk cbo cbt cbu cca ccb ccc ccf ccg cch cck cco cct ccu cfa cfb cfc cff cfg cfh cfk cfo cft cfu cga cgb cgc cgg cgh cgo cgt cgu ch- cha chb chc chf chg chh chk cho cht chu cka ckb ckc ckh cko ckt co- coa cob coc cof cog coh cok coo cot cou cta ctb ctc ctf ctg cth ctk cto ctt ctu cua cub cuc cuf cug cuh cuk cuo cut cuu faa fab fac faf fag fah fak fao fat fau fba fbb fbc fbf fbg fbh fbk fbo fbt fbu fca fcb fcc fcf fcg fck fco fct fcu ffa ffc fff ffg ffh ffk ffo fft ffu fga fgb fgc fgf fgg fgh fgt fha fhb fhc fhf fhg fhh fho fka fkb fkc fkf fkg fkk fkt foa fob foc fof fog foh fok foo fot fou fta ftb ftc ftf ftg fth ftk fto ftt ftu fua fub fuf fug fuk fuo fut fuu gaa gab gac gaf gag gah gak gao gat gau gba gbc gbf gbg gbh gbk gbo gbt gbu gca gcb gcc gcf gcg gch gck gco gct gcu gfa gfb gfc gff gfh gfk gfo gft gga ggb ggc ggg ggh ggo ggt ggu gha ghb ghc ghg ghh gho ght gka gkb gkh gko gkt goa gob goc gof gog goh gok goo got gou gta gtb gtc gtf gtg gth gtk gto gtt gtu gu- gua gub guc guf gug guk guo gut guu haa hab hac haf hag hah hak hao hat hau hba hbb hbc hbf hbg hbh hbk hbo hbt hbu hca hcb hcc hcf hcg hch hck hco hct hfa hfb hfc hff hfg hfh hfk hfo hft hfu hga hgb hgc hgf hgg hgh hgk hgo hgt hgu hha hhb hhc hhf hhg hhh hhk hho hht hhu hka hkb hkf hkg hkh hkk hko hkt hku hoa hob hoc hof hog hoh hok hoo hot hou hta htb htc htf htg hth htk hto htt hua hub huc huf hug huh huk huo hut huu k-t ka- kaa kab kac kaf kag kah kak kao kat kau kba kbb kbc kbf kbh kbk kbo kbu kca kcb kcc kcg kch kck kct kcu kfa kfc kff kfg kfh kfo kfu kga kgb kgc kgf kgh kgo kgu kha khf khh khk kho khu kkb kkc kkh kkk kkt kku koa kob koc kof kog koh kok koo kot kou kta ktb ktc ktf ktg kth ktk kto ktt ktu kub kuc kug kuh kuk kut kuu oaa oab oac oaf oag oah oak oao oat oau ob- oba obb obc obf obg obh obk obo obt obu oc- oca ocb occ ocf ocg och ock oco oct ocu of- ofa ofb ofc off ofg ofo oft ofu oga ogc ogf ogg ogh ogo ogt oha ohc ohf ohg ohh oho oht ohu oka okb okc okg okk oko oku oo- ooa oob ooc oof oog ooh ook ooo oot ot- ota otb otc otf otg oth otk oto ott otu ou- oua ouc ouf ouh ouk ouo out taa tab tac taf tag tah tak tao tat tau tba tbb tbc tbf tbg tbh tbk tbo tbt tbu tca tcb tcc tcf tcg tch tck tco tct tcu tfa tfb tfc tff tfg tfh tfk tfo tft tfu tga tgb tgc tgf tgg tgh tgk tgo tgt tgu th- tha thb thc thf thg thh thk tho tht thu tka tkb tkc tkg tkk tko tkt to- toa tob toc tof tog toh tok too tot tou tta ttb ttc ttf ttg tth ttk tto ttt ttu tua tub tuc tuf tug tuh tuk tuo tut tuu ua- uaa uab uac uaf uag uah uak uao uat uau uba ubb ubc ubf ubg ubh ubk ubo ubt ubu uca ucb ucc ucf ucg uch uck uco uct ucu ufa ufc uff ufg ufh ufo uft ufu uga ugb ugc ugf ugg ugh ugk ugo ugt ugu uha uhb uhc uhf uhh uho uht uhu uka ukb ukc ukf ukk uku uoa uob uoc uog uok uoo uot uta utb utc utf uth utk uto utt utu uua uuc uug uut uuu