-er a-a a-b aaa aab aae aah aak aao aar ab- aba abb abe abh abk abo abr aea aeb aee aeh aek aeo aer aha ahb ahe ahh ahk aho ahr aka akb ake akh akk ako akr aoa aob aoe aoh aok aoo aor ar- ara arb are arh ark aro arr baa bab bae bah bak bao bar bba bbb bbe bbh bbk bbo bbr be- bea beb bee beh bek beo ber bha bhb bhe bhh bhk bho bhr bka bkb bke bkk bko bkr boa bob boe boh bok boo bor bra brb bre brh brk bro brr eaa eab eae eah eak eao ear eba ebb ebe ebh ebk ebo ebr eea eeb eee eek eeo eer eha ehb ehe ehh eho ehr eka ekb eke ekh eko ekr eo- eoa eob eoe eoh eok eoo eor era erb ere erh erk ero err haa hab hae hah hak hao har hba hbb hbe hbh hbk hbo hbr he- hea heb hee heh hek heo her hha hhb hhe hhh hhk hho hhr hka hkb hkh hkk hko hkr hoa hob hoe hoh hok hoo hor hr- hra hrb hre hrh hrk hro hrr ka- kaa kab kae kah kak kao kar kba kbb kbe kbh kbk kbo kbr ke- kea keb kee keh kek keo ker kha khe khh khk kho khr kkb kke kkh kkk kkr koa kob koe koh kok koo kor kra krk kro krr oaa oab oae oah oak oao oar ob- oba obb obe obh obk obo obr oea oeb oee oeh oeo oer oha ohe ohh oho ohr oka okb oke okk oko okr oo- ooa oob ooh ook ooo oor or- ora orb ore orh ork oro orr ra- raa rab rae rah rak rao rar rba rbb rbe rbh rbk rbo rbr re- rea reb ree reh rek reo rer rh- rha rhb rhe rhh rho rhr rkb rke rkk rko roa rob roe roh rok roo ror rra rrb rrh rrk rrr

a-ak a-be a-ha a-ok aaaa aaab aaae aaah aaar aaba aabb aabh aaea aaha aahk aaka aake aaoe aaoo aara aare aaro abaa abab abae abak abar abb- abba abbb abbe abbo abbr abee aber abha abho abhr aboa abob aboh abok aboo abor abra abro aeer aeka aer- aera aero ahab ahah ahar ahha ahoa ahoe ahok ahor ahra ahre ahrr akaa akae akah akao akar akee aker akha akka akko akok akr- akra akre aoah aoba aora aorb arab arae arah arak arar arba arbe arbh area aree areh arek areo arh- arka arke arkh arko aroa arob aroe aroo aror arr- arra arre arrh arrk arro arrr baaa baah baak baar baba babb babe babo babr baek baer baha baho bahr bak- baka bake bakh bako bakr baoh bar- bara barb bare barh bark baro barr bbbb bbeb beah beak bear beba bebb bebe bebo beeb beek beer behr beka beke beko beo- beok beor bera bere berk bero berr bhao bhar bher bhor bhra boab boak boar boba bobb bobe bobo boea boee boeo boer boha boho bohr boka boke boko boob booe booh book boor bor- bora bore borh bork boro borr brab brae brah brak brao brea breb bree brek breo brer brka brkb broa brob broe broh brok broo bror brrr eaba eabh eara earb eare earh earo ebba ebbo ebbr eber eboe eboo ebor ebro eeea eeee eeka eeke eera eero ehaa ehea eheh eher ehre eka- ekab ekeb ekek eker ekho ekka ekoa eoka eora eore erba erbb erbe ereb erer erke erob eroe eroo erra erre erro haab haak haar haba habe habo haha haho haka hake hakk hako haor hara hare harh hark haro harr hbar heah hear hebb hebe hebo hebr heeb heek heer hehe heho heka heke heor hera herb here herk hero herr hhaa hhhh hoar hoba hobe hobo hoek hoer hoha hohe hoho hoka hoke hoko hooe hook hoor hora hore hork horo horr hree hrob kaaa kaab kaak kaar kaba kabb kabe kabo kabr kaeh kaeo kaer kaha kahe kaho kahr kaka kake kakh kakk kako kaoa kaok kaor kara karb kare kark karo karr kbaa kbab kbae kbak kbar kbba kbbb kbbe kbbk kbbo kbbr kbeb kbee kbeh kbek kbeo kber kbhb kbhe kbhh kbhr kbkb kbkk kbko kbkr kboa kbob kboe kbok kboo kbra kbrb kbre kbrh kbrk kbro kea- keak kear keba kebb kebe kebr keeh keek keer kehk kehr keka kekb keke keko keok ker- kera kerb kere kerk kero kerr khab khak khao khar khbr kheb kher khhk khho khka khke khkk khkr khoa khob khoe khok khor khra khrk khro khrr kkaa kkar kkba kkbb kkbe kkbo kkbr kkea kkha kkhb kkhh kkhk kkhr kkkk kkoa kkob kkoh kkoo kkor kkrb kkre kkrh kkrk kkro kkrr koab koae koak koar koba kobb kobe kobk kobo kobr koea koha kohh koho kohr koka kokb koke kokh kokk koko kokr koob kook kooo koor kora korb kore kork koro korr krab krae krah krak krar krba krbb krbe krbk krbr krea kreb kree kreh krek kreo krka krke krkh krkk krko krkr kroa krob kroe kroh krok kroo kror krrb krre krrk krro krrr o-eo oaer oahe oake oara oare obak obba obbo obea ober obkb oboe obok obor obra obre obrh obro oera oere ohba ohbe ohee oher ohho ohob ohoh ohok ohra ohre okak okeh oker okha okka okko okok okor okra okre okro ooaa ooak ooba oobe ooer ooha ooho oooh oooo oora oore orab orae orah orak orao orar orba orbb orbe orbo ore- orea oreb oreh orek oreo orer orhe orka orke orko oro- oroe orok oror orra orro raab raak raba rabb rabe rabk rabo raer raha rahe rahr raka rake rakk raob raoh raok rara rarb rare rark raro rbbb rbbr rboh rea- reae reak reao rear reba rebb rebe rebk rebo reeb reek reha rehb rehe reka reke reko rera rere rero rhae rhea