a-a a-b a-i a-t aaa aab aag aai aao aar aat ab- aba abb abg abi abo abr abt ag- aga agb agg agi ago agr agt ai- aia aib aig aii aio air ait aoa aob aog aoi aoo aor aot ar- ara arb arg ari aro arr art at- ata atb atg ati ato atr att baa bab bag bai bao bar bat bba bbb bbg bbi bbo bbr bbt bga bgb bgg bgi bgo bgr bgt bi- bia bib big bii bio bir bit boa bob bog boi boo bor bot bra brb brg bri bro brr brt bta btb btg bti bto btr btt gaa gab gag gai gao gar gat gba gbg gbi gbo gbr gbt gga ggb ggg ggi ggo ggr ggt gia gib gig gii gio gir git goa gob gog goi goo gor got gra grb grg gri gro grr grt gta gtb gtg gti gto gtr gtt ia- iaa iab iag iai iao iar iat iba ibb ibg ibi ibo ibr ibt iga igb igg igi igo igr igt iia iib iii iio iir iit io- ioa iob iog ioi ioo ior iot ir- ira irb irg iri iro irr irt ita itb itg iti ito itt o-i oaa oab oag oai oao oar oat ob- oba obb obg obi obo obr obt oga ogg ogi ogo ogt oia oib oii oio oir oit oo- ooa oob oog ooi ooo oor oot or- ora orb org ori oro orr ort ot- ota otb otg oti oto otr ott ra- raa rab rag rai rao rar rat rba rbb rbg rbi rbo rbr rbt rga rgb rgg rgi rgo rgr rgt ria rib rig rii rio rir rit roa rob rog roi roo ror rot rra rrb rrg rri rrr rrt rta rtb rtg rti rto rtr rtt taa tab tag tai tao tar tat tba tbb tbg tbi tbo tbr tbt tga tgb tgg tgi tgo tgr tgt tia tib tig tii tio tir tit to- toa tob tog toi too tor tot tra trb trg tri tro trr trt tta ttb ttg 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 abag abai abar abat abb- abba abbb abbi abbo abbr abbt abia abib abig abir abit aboa abob aboo abor abot abra abri abro abta ag-o agag agai agao agar agat agba agbo agga aggi agia agib agig agii agio agir agit agob agog agoo agot agra agri agro agta agtr aiai aiba aibo aiga aigo aiia aiib aiir aioi aira airi airo airt aita aiti aitr aitt aoba aora aorb aort arab arag arai arar arat arba arbi arga argb argi argo aria arib arig arii ario arit aroa arob aroi aroo aror arr- arra arrg arri arro arrr arrt arta arti arto artr at-t ataa atab atai atar atat atgo atia atit atob atoi ator atot atra atri atro atta atti atto attr ba-i baaa baar baat baba babb babi babo babr baga bagg bagi bago bagt baia baib baig baio bair bait bar- bara barb barg bari baro barr bart bata bati bato batt bbbb bbga bbrg bgia biao biar biat biba bibb bibi bibo biga bigb bigg bigo bigt bio- biog bioi biot bira birb birg biri biro birr birt bita bito bitt boab boag boai boar boat boba bobb bobi bobo boga bogg bogi bogo bogt boi- boii boit boob boog boor boot bor- bora borg bori boro borr bort bota botb boti boto bott brab brag brai brao brat bria brig brio brit broa brob brog broo bror brot brrr btaa btob btor btrt bttb gaar gaba gabb gabi gabo gabr gabt gaga gagg gagi gago gaia gaig gair gait gara garb garg gari garo garr gart gata gati gato gatr gatt gbag gbbo ggbt gggg giaa giai giat giba gibb giga gigg gigi gigo giog gioi gira girg giri giro girr girt gita gito goai goar goat goba gobi gobo goga gogi gogo goit goog gooi goor goot gora gorb gorg gori goro gorr gort gota goti goto gott grab grai grat grbr gria grib grig grit grob grog groi groo gror grot grrr gtaa gtbr gtta i-go iaaa iaai iaat iaba iago iaia iara iart iata iati ibar ibat ibga ibia ibot ibra ibri ibro ibtb igar igba igbo igga igia igoo igor igot igra igri iiii iiio iiit iioi iioo iira iita iitr iitt ioba iobi iogt ioii ioio ioit iooi iooo iora iorg iori iota ioto irai irao irar iri- iria irig irio irob irra irri irta irti itaa itai itar itat itgo itia itoi itoo itor itra itri itta itto oara obai obba obbo obia obit oboi obor obot obra obri obro ogai ogar ogb ogba oggi ogoa ogog ogoi ogra ogri ogro oiba oigo oiii oira oirt oita oiti ooaa ooba oobi ooia oooo oora oort ootb orab orai orao orar orat orba orbb orbi orbo orga orgo ori- oria orig orio orit oro- oror orot orra orri orro orta orto otar otit oto- otog otoo otor otra otro otta otti otto raab raag raat raba rabb rabi rabo raga ragg ragi rago raia raig raii rair rait raob rara rarb rari raro rata rati rato ratt rbbb rbbr rgba rgbi rgit rgtr riaa riab riai riat rib- riba ribo riga rigg rigi rigo riia riot riri rita riti rito ritt roab roag roar roat rob- roba robb robi robo robt roga rogg rogi rogo roia roig roio roir roit roob roog rooi roor root rora rori roro rort rota rotg roti roto rotr rott rrat rrrr rtai taa- taag taar taat taba tabb tabi tabo taga tagg tagi tago taia taig taio tair tait taoa taor tara tarb targ tari taro tarr tart tata tatb tati tato tatr tatt tbar tbit tbrb tbta tiaa tiab tiao tiar tiba tibi tiga tigi tigr tiit tira tirb tiri tiro tirr tita titi tito