a-a a-b a-i a-t aaa aab aag aai aao aas aat ab- aba abb abg abi abo abs abt ag- aga agb agg agi ago ags agt ai- aia aib aig aii aio ais ait aoa aob aog aoi aoo aos aot as- asa asb asg asi aso ass ast at- ata atb atg ati ato ats att baa bab bag bai bao bas bat bba bbb bbg bbi bbo bbs bbt bga bgb bgg bgi bgo bgs bgt bi- bia bib big bii bio bis bit boa bob bog boi boo bos bot bsa bsb bsg bsi bso bss bst bta btb btg bti bto bts btt gaa gab gag gai gao gas gat gba gbg gbi gbo gbs gbt gga ggb ggg ggi ggo ggs ggt gia gib gig gii gio gis git goa gob gog goi goo gos got gsa gsb gsg gsi gso gss gst gta gtb gtg gti gto gts gtt ia- iaa iab iag iai iao ias iat iba ibb ibg ibi ibo ibs ibt iga igb igg igi igo igs igt iia iib iii iio iis iit io- ioa iob iog ioi ioo ios iot is- isa isb isg isi iso iss ist ita itb itg iti ito its itt o-i oaa oab oag oai oao oas oat ob- oba obb obg obi obo obs obt oga ogg ogi ogo ogs ogt oia oib oii oio ois oit oo- ooa oob oog ooi ooo oos oot os- osa osb osg osi oso oss ost ot- ota otb otg oti oto ots ott saa sab sag sai sao sas sat sba sbb sbg sbi sbo sbs sbt sga sgb sgg sgi sgo sgs sgt sia sib sig sii sio sis sit soa sob sog soi soo sos sot ss- ssa ssb ssg ssi sso sss sst sta stb stg sti sto sts stt taa tab tag tai tao tas tat tba tbb tbg tbi tbo tbs tbt tga tgb tgg tgi tgo tgs tgt tia tib tig tii tio tis tit to- toa tob tog toi too tos tot tsa tsb tsg tsi tso tss tst tta ttb ttg tti tto tts ttt

a-ii aaaa aaab aaai aaas aaba aabb aabi aabt aaib aaii aais aaoo aasa aasi aass aast aata aatt abaa abab abag abai abas abat abb- abba abbb abbi abbo abbs abbt abia abib abig abis abit aboa abob aboo abos abot abs- absa absi abss abta abts ag-o agag agai agao agas agat agba agbo agga aggi agia agib agig agii agio agis agit agob agog agoo agos agot agsa agsg agst agta agts aiai aias aiba aibo aiga aigo aiia aiib aioi aisa aisb aisg aisi aiso aist aita aiti aits aitt aoba aoss asaa asab asag asai asao asas asat asba asbo asgt asia asii asio asis asit asob asog asoi asos asot assa assi asso asss asst asta astb asti asto asts at-t ataa atab atai atas atat atbs atgo atia atis atit atob atoi atos atot atsb atsi atst atta atti atto atts ba-i baaa baas baat baba babb babi babo babs baga bagg bagi bago bags bagt baia baib baig baio bais bait baos basa basi baso bass bast bata bati bato bats batt bbas bbbb bbbs bbga bggs bgia bgst biao bias biat biba bibb bibi bibo bibs biga bigb bigg bigo bigs bigt biis bio- biog bioi bios biot bis- bisa biso biss bist bita bito bits bitt boab boag boai boas boat boba bobb bobi bobo bobs boga bogg bogi bogo bogs bogt boi- boii bois boit boob boog boos boot bosa bosi boso boss bost bota botb boti boto bots bott bsaa bsas bsat bsgs bsos bsts btaa btob btss bttb gaas gaba gabb gabi gabo gabs gabt gaga gagg gagi gago gags gaia gaig gais gait gaos gasa gasb gasi gaso gass gast gata gati gato gats gatt gbag gbas gbbo gbbs ggbt gggg ggss giaa giai gias giat giba gibb gibs giga gigg gigi gigo gigs giis giog gioi gisa giss gist gita gito gits goai goas goat goba gobi gobo gobs goga gogi gogo gogs gois goit goog gooi goos goot gosi goso goss gost gota goti goto gots gott gsab gsat gsis gsos gtaa gtos gtta i-go iaaa iaai iaas iaat iaba iago iags iaia iais iasa iasi iaso iata iati ibas ibat ibga ibia ibis ibos ibot ibsa ibss ibtb ibts igas igba igbo igga iggs igia igis igoo igot igso iias iiii iiio iiis iiit iioi iioo iios iisi iist iita iitt ioba iobi iogt ioii ioio ioit iooi iooo ioos ioso iota ioto is-a isai isao isas isat isba isbt isia isis isit iso- isos issa issi isso isss ista isti isto ists itaa itai itas itat itbs itgo itgs itia itis itoi itoo itos itsa itsi itso itta itto oais oasi oass oast oats obai obas obba obbo obia obis obit oboi obos obot obss obst obts ogai ogb ogba oggi ogoa ogog ogoi ogsi oiba oigo oiii oios oist oita oiti ooaa ooba oobi ooia oooo ooos oosa oosi oost ootb oots osag osai osas osat osba osgi osia osii osis osoi osoo osos ossa ossb ossi osso osta osti osts otas otbs otis otit oto- otog otoo otos otsa otsg otso otta otti otto otts s-ib s-ii s-os saab saag saas saat saba sabb sabi sabo sabs saga sagg sagi sago sags sagt saia sais sait saoi saos sasa sasi saso sass sast sata satb satg sati sato sats satt sbaa sbai sbas sbbs sbia sbig sbot sbsa sbsi sbst sgaa sggg sggs sgio sgss sgta sgts siaa siab siag siai sias siat siba sibi sibo sibs siga sigg sigi sigo sigs siit sios siot sisa sisi siss sist sit- sita siti sito sits sitt soas soat soba sobo sobs sobt soga sogi sogo sogs soia sois soit soog soos soot sosa sosi soso soss sost sota soto sots ssaa ssab ssao ssas ssat ssgs ssgt ssis ssit ssot sssa sssb