-er a-a a-b a-i a-t aaa aab aae aai aak aao aar aat ab- aba abb abe abi abk abo abr abt aea aeb aee aei aek aeo aer aet ai- aia aib aie aii aik aio air ait aka akb ake aki akk ako akr aoa aob aoe aoi aok aoo aor aot ar- ara arb are ari ark aro arr art at- ata atb ate ati ato atr att baa bab bae bai bak bao bar bat bba bbb bbe bbi bbk bbo bbr bbt be- bea beb bee bei bek beo ber bet bi- bia bib bie bii bik bio bir bit bka bkb bke bkk bko bkr bkt boa bob boe boi bok boo bor bot bra brb bre bri brk bro brr brt bta btb bte bti btk bto btr btt eaa eab eae eai eak eao ear eat eba ebb ebe ebi ebk ebo ebr ebt eea eeb eee eek eeo eer eet eia eib eie eii eik eio eir eit eka ekb eke eki eko ekr ekt eo- eoa eob eoe eoi eok eoo eor eot era erb ere eri erk ero err ert eta etb ete eti etk eto etr ett ia- iaa iab iae iai iao iar iat iba ibb ibe ibi ibk ibo ibr ibt ie- iea iee iei iek ier iet iia iib iie iii iio iir iit ika ikb ike iki ikk iko ikr ikt io- ioa iob ioe ioi ioo ior iot ir- ira irb ire iri irk iro irr irt ita itb ite iti itk ito itt k-t ka- kaa kab kae kai kak kao kar kat kba kbb kbe kbi kbk kbo kbr ke- kea keb kee kei kek keo ker ket kia kib kie kii kik kio kir kit kkb kke kki kkk kkr kkt koa kob koe koi kok koo kor kot kra kri krk kro krr krt kta ktb kte ktk kto ktr ktt o-i oaa oab oae oai oak oao oar oat ob- oba obb obe obi obk obo obr obt oea oeb oee oei oeo oer oet oia oib oie oii oik oio oir oit oka okb oke oki okk oko okr oo- ooa oob ooi ook ooo oor oot or- ora orb ore ori ork oro orr ort ot- ota otb ote oti otk oto otr ott ra- raa rab rae rai rak rao rar rat rba rbb rbe rbi rbk rbo rbr rbt re- rea reb ree rei rek reo rer ret ria rib rie rii rik rio rir rit rkb rke rkk rko rkt roa rob roe roi rok roo ror rot rra rrb rri rrk rrr rrt rta rtb rte rti rtk rto rtr rtt taa tab tae tai tak tao tar tat tba tbb tbe tbi tbk tbo tbr tbt te- tea teb tee tei tek teo ter tet tia tib tie tii tik tio tir tit tka tkb tke tkk tko tkr tkt to- toa tob toe toi tok too tor tot tra trb tre tri trk tro trr trt tta ttb tte tti ttk tto ttr ttt

a-ak a-be a-ii a-ok aaaa aaab aaae aaai aaar aaba aabb aabi aabt aaea aaib aaii aaka aake aaoe aaoo aara aare aari aaro aart aata aatk aatt abaa abab abae abai abak abar abat abb- abba abbb abbe abbi abbo abbr abbt abee aber abet abia abib abie abir abit aboa abob abok aboo abor abot abra abri abro abta aebi aeer aeio aeit aeka aer- aera aeri aero aeta aeto aetr aett aiai aiba aibo aiea aiee aiet aiia aiib aiir aika aike aiki aiko aioi aira aire airi airo airt aita aite aiti aitr aitt akaa akae akai akao akar akee aker akia akie akik akio akir akka akki akko akok akot akr- akra akre akte aoba aoki aora aorb aort arab arae arai arak arar arat arba arbe arbi area aree arei arek areo aret aria arib arie arii arik ario arit arka arke arki arko aroa arob aroe aroi aroo aror arr- arra arre arri arrk arro arrr arrt arta arte arti arto artr at-t ataa atab atae atai atak atar atat atea atee atei ateo ater atia atie atik atit atka atkt atob atoe atoi atok ator atot atra atre atri atrk atro atta atte atti atto attr ba-i baaa baak baar baat baba babb babe babi babo babr baek baer baia baib baie baik baio bair bait bak- baka bake baki bako bakr bakt bar- bara barb bare bari bark baro barr bart bata bate bati bato batt bbbb bbeb bbet beak bear beat beba bebb bebe bebi bebo beeb beek beer beet beia beik beir beit beka beke beki beko beo- beok beor beot bera bere beri berk bero berr bert beta bete beti beto bett biak biao biar biat biba bibb bibe bibi bibo bieb bier biet bike biko bio- bioi biot bira birb bire biri birk biro birr birt bita bite bito bitt boab boai boak boar boat boba bobb bobe bobi bobo boea boee boeo boer boet boi- boie boii boit boka boke boki boko boob booe book boor boot bor- bora bore bori bork boro borr bort bota botb bote boti boto bott brab brae brai brak brao brat brea breb bree brei brek breo brer bret bria brie brik brio brit brka brkb broa brob broe brok broo bror brot brrr btaa btek btie btob btor btrt bttb eaba eara earb eare earo eart eata eate eati ebba ebbo ebbr eber ebit eboe eboo ebor ebro eeea eeee eeka eeke eera eero eeta eete eiao eiei eier eika eike eiki eiko eira eire eita eitb eiti eito eitr eka- ekab ekeb ekek eker eket ekka ekki ekoa ekoi ekta eoir eoka eora eore eori eota eoto erat erba erbb erbe ereb erei erer eret eria erie erik erio erit erke erki erob eroe eroi eroo erra erre erro erta etai etak etat etbr etee eter etik etio etka etoe etok etra etre etro