-er a-a a-b aaa aab aae aaf aah aao aar aau ab- aba abb abe abf abh abo abr abu aea aeb aee aef aeh aeo aer aeu af- afa afb afe aff afh afo afr afu aha ahb ahe ahf ahh aho ahr ahu aoa aob aoe aof aoh aoo aor aou ar- ara arb are arf arh aro arr aru au- aua aub aue auf auh auo aur b-u baa bab bae baf bah bao bar bau bba bbb bbe bbf bbh bbo bbr bbu be- bea beb bee bef beh beo ber beu bfa bfb bfe bff bfh bfo bfr bfu bha bhb bhe bhf bhh bho bhr bhu boa bob boe bof boh boo bor bou bra brb bre brf brh bro brr bru bua bub bue buf buh buo bur buu eaa eab eae eaf eah eao ear eau eba ebb ebe ebf ebh ebo ebr ebu eea eeb eee eef eeo eer ef- efa efb efe eff efh efo efr eha ehb ehe ehf ehh eho ehr ehu eo- eoa eob eoe eof eoh eoo eor eou era erb ere erf erh ero err eru eu- eua eub eue euf eur faa fab fae faf fah fao far fau fba fbb fbe fbf fbh fbo fbr fbu fea feb fee fef feh feo fer feu ffa ffe fff ffh ffo ffr ffu fha fhb fhe fhf fhh fho fhr foa fob foe fof foh foo for fou fra frb fre frf frh fro frr fru fua fub fue fuf fuo fur fuu haa hab hae haf hah hao har hau hba hbb hbe hbf hbh hbo hbr hbu he- hea heb hee hef heh heo her heu hfa hfb hfe hff hfh hfo hfr hfu hha hhb hhe hhf hhh hho hhr hhu hoa hob hoe hof hoh hoo hor hou hr- hra hrb hre hrf hrh hro hrr hru hua hub hue huf huh huo hur huu oaa oab oae oaf oah oao oar oau ob- oba obb obe obf obh obo obr obu oea oeb oee oef oeh oeo oer of- ofa ofb ofe off ofo ofr ofu oha ohe ohf ohh oho ohr ohu oo- ooa oob oof ooh ooo oor or- ora orb ore orf orh oro orr oru ou- oua oue ouf ouh ouo our ra- raa rab rae raf rah rao rar rau rba rbb rbe rbf rbh rbo rbr rbu re- rea reb ree ref reh reo rer reu rfa rfb rfe rff rfh rfo rfr rfu rh- rha rhb rhe rhf rhh rho rhr rhu roa rob roe rof roh roo ror rou rra rrb rrf rrh rrr rru rua rub rue ruf ruh ruo rur ruu ua- uaa uab uae uaf uah uao uar uau uba ubb ube ubf ubh ubo ubr ubu uea ueb uee uef ueh uer ufa ufe uff ufh ufo ufr ufu uha uhb uhe uhf uhh uho uhr uhu uoa uob uoe uoo uor ur- ura urb ure urf uro urr uru uua uue uur uuu

-hou a-be a-fu a-ha aaaa aaab aaae aaaf aaah aaar aaba aabb aabh aaea aafa aafb aaff aaha aaoe aaoo aara aare aaro aaru abaa abab abae abaf abar abau abb- abba abbb abbe abbo abbr abee aber abff abha abho abhr aboa abob abof aboh aboo abor abou abra abro abua abue abuf aeaf aeer aer- aera aero afaa afao afar afee afer affa affo afoa afoe afoo afor afr- afra afre afro afru afua afue ahab ahah ahar ahau ahfa ahha ahoa ahoe ahor ahra ahre ahrr ahua aoah aoba aoeu aora aorb aouf arab arae araf arah arar arau arba arbe arbh area aree aref areh areo areu arfa arfb arff arfu arh- aroa arob aroe aroo aror arr- arra arre arrh arro arrr arru arua arub arue auaa aube auer aufe aur- aura aure auro baaa baaf baah baar baba babb babe babo babr babu baer baff bafo baha baho bahr bahu baoh bar- bara barb bare barf barh baro barr baru bau- bauf baur bbau bbbb bbeb beaf beah bear beau beba bebb bebe bebo beeb beef beer befa befe beff befo behr beo- beof beor bera bere bero berr beru beur bhao bhar bher bhff bhor bhra bhur bhuu boab boar boba bobb bobe bobo bobu boea boee boef boeo boer bofa bofe boff bofh bofu boha boho bohr bohu boob booe boof booh boor bor- bora bore borf borh boro borr boru boua boue bouf bouh bour brab brae braf brah brao brau brea breb bree bref breo brer brfu broa brob broe broh broo bror brou brrr brue bruh buar buba bubb bube bubo bubu buea buer bueu bufe buff bufo bufr buha buhe buho buhr bur- bura burb bure burh buro burr buru eaaf eaba eabh eafb eara earb eare earh earo ebba ebbo ebbr eber eboe eboo ebor ebro ebru ebur eeea eeee eefa eefe eera eero efab efbr efeo effa efor efua ehaa ehea eheh eher eheu ehre eora eore eraf erau erba erbb erbe ereb erer erhu erob eroe eroo erra erre erro erua erub eruh erur euba euer eur- eura eure euro faaa faah faba fabe fabo fabu faeb fafa fafe faff fafo faha fahr fara farb fare faro farr faru faue faur fbar feaf fear feba febo feeb feer fefe feff fefo fehr fehu feof feoh fera ferb fere fero ferr feru ffar ffee ffff ffrr foaf foar foba foer fofo fohr foof for- fora forb fore foro forr foua four frab frae frau frea free freo frob froe froh frou frub frue fuar fubb fubu fuff fufu fuor fur- fura fure furo furr haab haaf haar haba habe habo habu hafb hafe haff haha haho haor hara hare harf harh haro harr haru hau- haue hauf hbar heaf heah hear hebb hebe hebo hebr heeb heef heer hefe hehe heho heor heou hera herb here hero herr heru heue heur hfba hhaa hhhh hhof hoar hoba hobe hobo hoer