a-a a-b a-i a-t aaa aab aai aao aar aas aat aax ab- aba abb abi abo abr abs abt abx ai- aia aib aii aio air ais ait aix aoa aob aoi aoo aor aos aot aox ar- ara arb ari aro arr ars art arx as- asa asb asi aso asr ass ast asx at- ata atb ati ato atr ats att atx ax- axa axi axo axr axs axt axx baa bab bai bao bar bas bat bax bba bbb bbi bbo bbr bbs bbt bbx bi- bia bib bii bio bir bis bit bix boa bob boi boo bor bos bot box bra brb bri bro brr brs brt brx bsa bsb bsi bso bsr bss bst bsx bta btb bti bto btr bts btt btx bxb bxi bxo bxx ia- iaa iab iai iao iar ias iat iba ibb ibi ibo ibr ibs ibt ibx iia iib iii iio iir iis iit iix io- ioa iob ioi ioo ior ios iot ir- ira irb iri iro irr irs irt irx is- isa isb isi iso isr iss ist ita itb iti ito its itt itx ixi o-i oaa oab oai oao oar oas oat oax ob- oba obb obi obo obr obs obt obx oia oib oii oio oir ois oit oo- ooa oob ooi ooo oor oos oot oox or- ora orb ori oro orr ors ort orx os- osa osb osi oso osr oss ost osx ot- ota otb oti oto otr ots ott ox- oxa oxb oxi oxo oxt oxx ra- raa rab rai rao rar ras rat rax rba rbb rbi rbo rbr rbs rbt rbx ria rib rii rio rir ris rit rix roa rob roi roo ror ros rot rox rra rrb rri rrr rrs rrt rsa rsb rsi rso rsr rss rst rsx rta rtb rti rto rtr rts rtt rtx rxr rxs saa sab sai sao sar sas sat sax sba sbb sbi sbo sbr sbs sbt sbx sia sib sii sio sir sis sit six soa sob soi soo sor sos sot sox sr- sra srb sri sro srr srs srt srx ss- ssa ssb ssi sso ssr sss sst ssx sta stb sti sto str sts stt stx sxi sxs sxt t-x taa tab tai tao tar tas tat tax tba tbb tbi tbo tbr tbs tbt tia tib tii tio tir tis tit tix to- toa tob toi too tor tos tot tox tra trb tri tro trr trs trt trx tsa tsb tsi tso tsr tss tst tsx tta ttb tti tto ttr tts ttt ttx txi txs txt xaa xar xas xat xbr xbx xia xii xio xis xit xix xoa xoi xoo xor xos xot xox xrt xrx xsa xsb xsi xss xst xti xtr xts xtx xxi xxo xxx

a-ii aaaa aaab aaai aaar aaas aaba aabb aabi aabt aaib aaii aais aaoo aara aari aaro aars aart aasa aasi aass aast aata aatt abaa abab abai abar abas abat abax abb- abba abbb abbi abbo abbr abbs abbt abia abib abir abis abit aboa abob aboo abor abos abot abox abra abri abro abrs abs- absa absi abss abta abts aiai aias aiba aibo aiia aiib aiir aioi aira airi airo airs airt airx aisa aisb aisi aiso aisr aist aita aiti aitr aits aitt aixa aixi aoba aora aorb aors aort aoss arab arai arar aras arat arax arba arbi arbs aria arib arii ario aris arit aroa arob aroi aroo aror aros arr- arra arri arro arrr arrs arrt ars- arsa arsi arso arst arta arti arto artr arts artx asaa asab asai asao asar asas asat asba asbo asia asii asio asir asis asit asix asob asoi asor asos asot asra asro asrs assa assi asso assr asss asst asta astb asti asto astr asts at-t at-x ataa atab atai atar atas atat atax atbs atia atis atit atob atoi ator atos atot atra atri atro atrx atsb atsi atst atta atti atto attr atts axar axat axi- axia axis axo- axoa axos axto axxo ba-i ba-x baaa baar baas baat baba babb babi babo babr babs baia baib baio bair bais bait baix baos bar- bara barb bari baro barr bars bart barx basa basi baso bass bast bata bati bato bats batt baxi baxt bbas bbbb bbbs bbox biao biar bias biat biba bibb bibi bibo bibs biis bio- bioi bios biot biox bira birb biri biro birr birs birt birx bis- bisa biso biss bist bita bito bits bitt bitx bixa bixi boab boai boar boas boat boba bobb bobi bobo bobs boi- boii bois boit boob boor boos boot boox bor- bora bori boro borr bors bort bosa bosi boso boss bost bota botb boti boto bots bott boxa brab brai brao bras brat brax bria brio bris brit brix broa brob broo bror bros brot brox brrr brrs brsb brsr brst bsaa bsas bsat bsix bsos bsra bsts btaa btob btor btrt btss bttb iaaa iaai iaas iaat iaba iaia iais iara iars iart iasa iasi iaso iasr iata iati ibar ibas ibat ibia ibis ibos ibot ibox ibra ibri ibro ibsa ibss ibtb ibts iias iiii iiio iiis iiit iioi iioo iios iira iirs iisi iisr iist iita iitr iitt ioba iobi ioii ioio ioit iooi iooo ioos iora iori iors ioso iota ioto irai irao irar iras iri- iria irio iris irix irob irra irri irrs irsa irta irti irts is-a isai isao isar isas isat isba isbt isbx isia isis isit iso- isor isos isra isri issa issi isso issr isss ista isti isto istr ists itaa itai itar itas itat itbs itia itis itoi itoo itor itos itra itri itrs itsa itsi itso itta itto ixia ixos ixxi oais oara oars oasi oass oast oats obai obas obba obbo obia obis obit obix oboi obor obos obot obox obra obri obro obsr obss obst obts oiba oiii oios oira oirt oist oita oiti ooaa ooba oobi ooia