a-a a-b a-i a-t aaa aab aai aao aar aat ab- aba abb abi abo abr abt ai- aia aib aii aio air ait aoa aob aoi aoo aor aot ar- ara arb ari aro arr art at- ata atb ati ato atr att baa bab bai bao bar bat bba bbb bbi bbo bbr bbt bi- bia bib bii bio bir bit boa bob boi boo bor bot bra brb bri bro brr brt bta btb bti bto btr btt ia- iaa iab iai iao iar iat iba ibb ibi ibo ibr ibt iia iib iii iio iir iit io- ioa iob ioi ioo ior iot ir- ira irb iri iro irr irt ita itb iti ito itt o-i oaa oab oai oao oar oat ob- oba obb obi obo obr obt oia oib oii oio oir oit oo- ooa oob ooi ooo oor oot or- ora orb ori oro orr ort ot- ota otb oti oto otr ott ra- raa rab rai rao rar rat rba rbb rbi rbo rbr rbt ria rib rii rio rir rit roa rob roi roo ror rot rra rrb rri rrr rrt rta rtb rti rto rtr rtt taa tab tai tao tar tat tba tbb tbi tbo tbr tbt tia tib tii tio tir tit to- toa tob toi too tor tot tra trb tri tro trr trt tta ttb tti tto ttr ttt

a-ii aaaa aaab aaai aaar aaba aabb aabi aabt aaib aaii aaoo aara aari aaro aart aata aatt abaa abab abai abar abat abb- abba abbb abbi abbo abbr abbt abia abib abir abit aboa abob aboo abor abot abra abri abro abta aiai aiba aibo aiia aiib aiir aioi aira airi airo airt aita aiti aitr aitt aoba aora aorb aort arab arai arar arat arba arbi aria arib arii ario arit aroa arob aroi aroo aror arr- arra arri arro arrr arrt arta arti arto artr at-t ataa atab atai atar atat atia atit atob atoi ator atot atra atri atro atta atti atto attr ba-i baaa baar baat baba babb babi babo babr baia baib baio bair bait bar- bara barb bari baro barr bart bata bati bato batt bbbb biao biar biat biba bibb bibi bibo bio- bioi biot bira birb biri biro birr birt bita bito bitt boab boai boar boat boba bobb bobi bobo boi- boii boit boob boor boot bor- bora bori boro borr bort bota botb boti boto bott brab brai brao brat bria brio brit broa brob broo bror brot brrr btaa btob btor btrt bttb iaaa iaai iaat iaba iaia iara iart iata iati ibar ibat ibia ibot ibra ibri ibro ibtb iiii iiio iiit iioi iioo iira iita iitr iitt ioba iobi ioii ioio ioit iooi iooo iora iori iota ioto irai irao irar iri- iria irio irob irra irri irta irti itaa itai itar itat itia itoi itoo itor itra itri itta itto oara obai obba obbo obia obit oboi obor obot obra obri obro oiba oiii oira oirt oita oiti ooaa ooba oobi ooia oooo oora oort ootb orab orai orao orar orat orba orbb orbi orbo ori- oria orio orit oro- oror orot orra orri orro orta orto otar otit oto- otoo otor otra otro otta otti otto raab raat raba rabb rabi rabo raia raii rair rait raob rara rarb rari raro rata rati rato ratt rbbb rbbr riaa riab riai riat rib- riba ribo riia riot riri rita riti rito ritt roab roar roat rob- roba robb robi robo robt roia roio roir roit roob rooi roor root rora rori roro rort rota roti roto rotr rott rrat rrrr rtai taa- taar taat taba tabb tabi tabo taia taio tair tait taoa taor tara tarb tari taro tarr tart tata tatb tati tato tatr tatt tbar tbit tbrb tbta tiaa tiab tiao tiar tiba tibi tiit tira tirb tiri tiro tirr tita titi tito titt toab toat toba tobi tobo tobt toit tooa toor toot tora tori toro torr tort tota toti toto totr tott traa trab trai trao trat tri- tria trib trio trit troa troi troo trot trra trtr ttab ttbb tttt

-aaa- a-iii aaaai aaata aabaa aabba aabra aaiib aaria aarti abaab ababa abaia abair abait abara abari abati abbai abbar abbat abbia abbot abiit abio- abira abita aboab aboat abobo aboot abora abort abott abrar abrit abtaa abtao abtar aiaia aibar aiboa airai airba airor airto aitit aitor aort- aorta ar-ab araat arab- araba arabi arabo araia arara arari arata arati arbab arbar arbat arbia arbib arbir arbit arbor arbot ariab ariat aribo arioi ariot arita ariti aroab aroar aroba aroor aroot arora arrai arria artar artat artia artio arto- artoo artot atara atari atbar atbat atiba atira atoot atora atoti atoto atrab atri- atria atrii atrio atro- atroa atrot attai attar attia attir atto- attra baari baart baata baati babai babar babia babio baboo babot babra baiao baiba baira bairo baita baori baoro baraa barab barai barao barar barat barba barbi bari- baria bario barit baro- baroa baroi baroo baror barot barra barri barro barta barto batab batar batat batir batob batoo bator batra batta batto bbart bbiab biara biari bibar bibbo bibia bibio bibra bibri biota birao birar birat birba bitab bitat bitit bitra bitti bitto bo-bo boaro boart bobar bobbi bobr bobri boiai boiar boiro boita boito booat booba booit boora boort boota borai borat borba borbo boria borio boro- boroa boroo borot borra borro botar botia botro botta botti braai braat brait bratt briar briot brita brito britt brobo brora broto brrar brrrr btr-t i-bot iatro ibaba ibara ibiai ibibo ibora ibota ibrat iiiii iitti iobit ioooi ioooo ioota iorio iotit iotti iraia irara irata irati irato irbit iriba irita irobo irori irota irrit itabi itart itata itati itbit itobi ittai ittar ittoo ittti o-r-b oaror obaba obara obata obiba obira obora oboro obrab obrat oibab oirat oirot oitti oobit ooioo ooooo oraba orabi oraio orara orari orato orbit orbot oriab oribi orita