-er a-a a-b aaa aab aae aak aao aar ab- aba abb abe abk abo abr aea aeb aee aek aeo aer aka akb ake akk ako akr aoa aob aoe aok aoo aor ar- ara arb are ark aro arr baa bab bae bak bao bar bba bbb bbe bbk bbo bbr be- bea beb bee bek beo ber bka bkb bke bkk bko bkr boa bob boe bok boo bor bra brb bre brk bro brr eaa eab eae eak eao ear eba ebb ebe ebk ebo ebr eea eeb eee eek eeo eer eka ekb eke eko ekr eo- eoa eob eoe eok eoo eor era erb ere erk ero err ka- kaa kab kae kak kao kar kba kbb kbe kbk kbo kbr ke- kea keb kee kek keo ker kkb kke kkk kkr koa kob koe kok koo kor kra krk kro krr oaa oab oae oak oao oar ob- oba obb obe obk obo obr oea oeb oee oeo oer oka okb oke okk oko okr oo- ooa oob ook ooo oor or- ora orb ore ork oro orr ra- raa rab rae rak rao rar rba rbb rbe rbk rbo rbr re- rea reb ree rek reo rer rkb rke rkk rko roa rob roe rok roo ror rra rrb rrk rrr

a-ak a-be a-ok aaaa aaab aaae aaar aaba aabb aaea aaka aake aaoe aaoo aara aare aaro abaa abab abae abak abar abb- abba abbb abbe abbo abbr abee aber aboa abob abok aboo abor abra abro aeer aeka aer- aera aero akaa akae akao akar akee aker akka akko akok akr- akra akre aoba aora aorb arab arae arak arar arba arbe area aree arek areo arka arke arko aroa arob aroe aroo aror arr- arra arre arrk arro arrr baaa baak baar baba babb babe babo babr baek baer bak- baka bake bako bakr bar- bara barb bare bark baro barr bbbb bbeb beak bear beba bebb bebe bebo beeb beek beer beka beke beko beo- beok beor bera bere berk bero berr boab boak boar boba bobb bobe bobo boea boee boeo boer boka boke boko boob booe book boor bor- bora bore bork boro borr brab brae brak brao brea breb bree brek breo brer brka brkb broa brob broe brok broo bror brrr eaba eara earb eare earo ebba ebbo ebbr eber eboe eboo ebor ebro eeea eeee eeka eeke eera eero eka- ekab ekeb ekek eker ekka ekoa eoka eora eore erba erbb erbe ereb erer erke erob eroe eroo erra erre erro kaaa kaab kaak kaar kaba kabb kabe kabo kabr kaeo kaer kaka kake kakk kako kaoa kaok kaor kara karb kare kark karo karr kbaa kbab kbae kbak kbar kbba kbbb kbbe kbbk kbbo kbbr kbeb kbee kbek kbeo kber kbkb kbkk kbko kbkr kboa kbob kboe kbok kboo kbra kbrb kbre kbrk kbro kea- keak kear keba kebb kebe kebr keek keer keka kekb keke keko keok ker- kera kerb kere kerk kero kerr kkaa kkar kkba kkbb kkbe kkbo kkbr kkea kkkk kkoa kkob kkoo kkor kkrb kkre kkrk kkro kkrr koab koae koak koar koba kobb kobe kobk kobo kobr koea koka kokb koke kokk koko kokr koob kook kooo koor kora korb kore kork koro korr krab krae krak krar krba krbb krbe krbk krbr krea kreb kree krek kreo krka krke krkk krko krkr kroa krob kroe krok kroo kror krrb krre krrk krro krrr o-eo oaer oake oara oare obak obba obbo obea ober obkb oboe obok obor obra obre obro oera oere okak oker okka okko okok okor okra okre okro ooaa ooak ooba oobe ooer oooo oora oore orab orae orak orao orar orba orbb orbe orbo ore- orea oreb orek oreo orer orka orke orko oro- oroe orok oror orra orro raab raak raba rabb rabe rabk rabo raer raka rake rakk raob raok rara rarb rare rark raro rbbb rbbr rea- reae reak reao rear reba rebb rebe rebk rebo reeb reek reka reke reko rera rere rero roab roak roar rob- roba robb robe robo roea roer roka roke rokk roko rokr roob rook roor rora rore rork roro rrrr

-aaa- aaaee aabaa aabba aabra aaker aakko aakre abaab ababa ababe abaer abaka abake abako abara abare abbar abear abeba abebe abeer abekr abera abere aberr abkar abkoo aboab abobo aboke abook abora abore abrak abrar abrek aeaea aebbe aereo aero- aeroe aka-e akaba akabo akaoa akare akbar akera akero akker akkra akobo akoka akoko akrak akrar akro- ar-ab arab- araba arabe arabo araea arake arara arare arbab arbar arbee arber arbok arbor arbre areae arear areek areka areke areo- arere arero arkar arkoe aroab aroar aroba arobe aroer aroor arora arore arrak arrea arroe b-r-k baabe baake babak babar babee babek baber babka baboo babra bakar bakea baker bakka bakke bakoa bakra baoro baraa barab barak barao barar barba barbe barea barek bareo barer bark- barka barke baro- baroa barok baroo baror barra barre barro bbbee bbear bbook be-er be-ro beara beare bebar bebek beber bebra beebe beeke bekaa beker bekka bekke bekko bekok bekra berak berar berba berbe berea berek berk- berka berke berko berob beroe berok beror berra berre bo-bo boaro bobak bobar bobea bobek bobko bobok bobr bobre boeke boero bokaa bokeo boker bokko bokok bokor booba booer booke booko boora boore borak borba borbo borea boree borek borer borka borko boro- boroa borok boroo borra borre borro braak brake brako break breba breek breer breke breo- brera brere broak brobo broek broer broke brook brora brrar brrrr eaker earar ebara ebber ebeko ebook eeeee ekeko ekker eorre erbaa erbar erbbe erber erear erere erkak erkko eroor erora erore error k-a-o k-rab k-rob kaaba kabaa kabab kabak kabar kabba kaber kabob kabro kaera kakae kakao kakar kakka kakke kakko kako- kakra kaooa karak karee kareo karka karob karok karoo karre keare kebab kebar kebbe kebek keber kebob kebra keera keere keora kera- kerar kerek kerre ko-ko koara