-th a-a a-b a-c a-t aaa aab aac aah aao aar aat aau ab- aba abb abc abh abo abr abt abu ac- aca acb acc ach aco acr act acu aha ahb ahc ahh aho ahr aht ahu aoa aob aoc aoh aoo aor aot aou ar- ara arb arc arh aro arr art aru at- ata atb atc ath ato atr att atu au- aua aub auc auh auo aur aut b-u baa bab bac bah bao bar bat bau bba bbb bbc bbh bbo bbr bbt bbu bca bcb bcc bch bco bcr bct bcu bha bhb bhc bhh bho bhr bht bhu boa bob boc boh boo bor bot bou bra brb brh bro brr brt bru bta btb btc bth bto btr btt btu bua bub buc buh buo bur but buu c-- caa cab cac cah cao car cat cau cba cbb cbc cbh cbo cbr cbt cbu cca ccb ccc cch cco ccr cct ccu ch- cha chb chc chh cho chr cht chu co- coa cob coc coh coo cor cot cou cra crb crc crh cro crr crt cru cta ctb ctc cth cto ctr ctt ctu cua cub cuc cuh cuo cur cut cuu haa hab hac hah hao har hat hau hba hbb hbc hbh hbo hbr hbt hbu hca hcb hcc hch hco hcr hct hha hhb hhc hhh hho hhr hht hhu hoa hob hoc hoh hoo hor hot hou hr- hra hrb hrc hrh hro hrr hrt hru hta htb htc hth hto htr htt hua hub huc huh huo hur hut huu oaa oab oac oah oao oar oat oau ob- oba obb obc obh obo obr obt obu oc- oca ocb occ och oco ocr oct ocu oha ohc ohh oho ohr oht ohu oo- ooa oob ooc ooh ooo oor oot or- ora orb orc orh oro orr ort oru ot- ota otb otc oth oto otr ott otu ou- oua ouc ouh ouo our out ra- raa rab rac rah rao rar rat rau rba rbb rbc rbh rbo rbr rbt rbu rca rcb rcc rch rco rcr rct rcu rh- rha rhb rhc rhh rho rhr rht rhu roa rob roc roh roo ror rot rou rra rrb rrc rrh rrr rrt rru rta rtb rtc rto rtr rtt rtu rua rub ruc ruh ruo rur rut ruu taa tab tac tah tao tar tat tau tba tbb tbc tbh tbo tbr tbt tbu tca tcb tcc tch tco tcr tct tcu th- tha thb thc thh tho thr tht thu to- toa tob toc toh too tor tot tou tra trb trc trh tro trr trt tru tta ttb ttc tth tto ttr ttt ttu tua tub tuc tuh tuo tur tut tuu ua- uaa uab uac uah uao uar uat uau uba ubb ubc ubh ubo ubr ubt ubu uca ucb ucc uch uco ucr uct ucu uha uhb uhc uhh uho uhr uht uhu uoa uob uoc uoo uor uot ur- ura urb urc uro urr urt uru uta utb utc uth uto utr utt utu uua uuc uur uut uuu

-hou a-ha aaaa aaab aaac aaah aaar aaba aabb aabc aabh aabt aaca aacb aacc aach aaco aacr aact aacu aaha aaoo aara aarc aaro aart aaru aata aatc aatt abaa abab abac abar abat abau abb- abba abbb abbo abbr abbt abca abcb abcc abch abcr abct abha abho abhr aboa abob aboh aboo abor abot abou abra abrc abro abta abtu abua abut ac-t acaa acab acac acar acat acba acca accc acch acco acct accu acha achh acho achr acht achu acoa acoh acor acot acou acr- acra acrc acro acrr acta actc acth acto actt actu acu- acuo acur acut ahab ahac ahah ahar ahat ahau ahha ahoa ahor ahot ahra ahrc ahrr ahta ahto ahua aoah aoba aoca aora aorb aort aotc aout arab arac arah arar arat arau arba arbh arc- arca arch arco arct arh- aroa arob aroo aror arr- arra arrc arrh arro arrr arrt arru arta artc arth arto artr arua arub arut at-t ataa atab atac atar atat atca atcc atch atco atcr atha atho atob atoc ator atot atra atrc atro atru atta atto attr attu atua atub atuc atur auaa auca auch auct auht aur- aura auro aut- auth auto baaa baah baar baat baba babb babo babr babu bac- baca bacc bach baco bact baha baho bahr baht bahu baoh bar- bara barb barc barh baro barr bart baru bata batc bath bato batt batu bau- baur bbau bbbb bbch bbrc bcaa bcar bcat bcbc bcca bccc bcor bcra bcru bctc bcuc bhao bhar bhat bhca bhcc bhor bhot bhra bhrt bhur bhut bhuu boab boac boar boat boba bobb bobo bobu boca boch boco bocu boha boho bohr boht bohu boob booc booh boor boot bor- bora borh boro borr bort boru bota botb both boto bott boua bouh bour bout brab brac brah brao brat brau brca brcb broa brob broc broh broo bror brot brou brrr brtc bruc bruh brut btaa btcc btob btor btrc btrt bttb buar buat buba bubb bubo bubu buca bucc buch buco bucu buha buho buhr bur- bura burb burh buro burr burt buru but- buta buto butt c-bo caaa caab caac caah caat caba cabo cabu cac- caca cacc cach caco cacr caha caht caor cara carb carc caro carr cart cat- cata catb catc cath cato catt catu cauc cauo caut cbac cbar cbat cbbc cbca cbcc cbcr cbct cbcu cbha cbot cbrh cbrt cbta cbtc ccaa ccab ccac ccar ccat ccba ccbc ccca cccb cccc cccu ccha cchr ccob ccoc ccra ccrc ccrt cctb cctc cctt ccuc ccut chaa chab chac chah chao char chat chau chca chch chha choc choh choo chor chou chra chrb chrc chro chrr chrt chto chtr chtt chua chub chur chut coat coba cobb cobh cobo cobu coca coch coco coct cocu coha coho coob cooh coot