-ic a-a a-b a-c a-i a-t aaa aab aac aai aak aar aat aax ab- aba abb abc abi abk abr abt abx ac- aca acb acc aci ack acr act acx ai- aia aib aic aii aik air ait aix aka akb akc aki akk akr ar- ara arb arc ari ark arr art arx at- ata atb atc ati atr att atx ax- axa axi axk axr axt axx baa bab bac bai bak bar bat bax bba bbb bbc bbi bbk bbr bbt bbx bca bcb bcc bci bck bcr bct bcx bi- bia bib bic bii bik bir bit bix bka bkb bkc bkk bkr bkt bkx bra brb bri brk brr brt brx bta btb btc bti btk btr btt btx bxb bxi bxx c-- caa cab cac cai cak car cat cax cba cbb cbc cbi cbk cbr cbt cbx cca ccb ccc cci cck ccr cct ccx ci- cia cib cic cii cik cir cit cix cka ckb ckc cki ckt ckx cra crb crc cri crk crr crt crx cta ctb ctc cti ctk ctr ctt ctx cxc cxi cxk cxr cxt cxx ia- iaa iab iac iai iar iat iba ibb ibc ibi ibk ibr ibt ibx ica icb icc ici ick icr ict iia iib iic iii iir iit iix ika ikb ikc iki ikk ikr ikt ikx ir- ira irb irc iri irk irr irt irx ita itb itc iti itk itt itx ixc ixi k-t ka- kaa kab kac kai kak kar kat kax kba kbb kbc kbi kbk kbr kbx kca kcb kcc kci kck kcr kct kcx kia kib kic kii kik kir kit kix kkb kkc kki kkk kkr kkt kra krc kri krk krr krt kta ktb ktc ktk ktr ktt ra- raa rab rac rai rak rar rat rax rba rbb rbc rbi rbk rbr rbt rbx rca rcb rcc rci rcr rct rcx ria rib ric rii rik rir rit rix rkb rkc rkk rkt rra rrb rrc rri rrk rrr rrt rta rtb rtc rti rtk rtr rtt rtx rxr t-x taa tab tac tai tak tar tat tax tba tbb tbc tbi tbk tbr tbt tca tcb tcc tci tck tcr tct tcx tia tib tic tii tik tir tit tix tka tkb tkc tkk tkr tkt tra trb trc tri trk trr trt trx tta ttb ttc tti ttk ttr ttt ttx txi txk txt xaa xac xak xar xat xbc xbr xbx xcb xci xcr xcx xia xic xii xit xix xkb xrc xrt xrx xtc xti xtr xtx xxi xxx

a-ak a-ii aaaa aaab aaac aaai aaar aaba aabb aabc aabi aabt aaca aacb aacc aaci aack aacr aact aaib aaic aaii aaka aara aarc aari aart aata aatc aatk aatt abaa abab abac abai abak abar abat abax abb- abba abbb abbi abbr abbt abca abcb abcc abci abcr abct abia abib abic abir abit abra abrc abri abta ac-t acaa acab acac acai acar acat acba acca accc acci acct aci- acia acic acir acr- acra acrc acri acrr acta actc acti actt aiai aiba aica aicc aicr aiia aiib aiic aiir aika aiki aira airi airt airx aita aiti aitr aitt aixa aixi akaa akai akar akca akia akik akir akka akki akr- akra arab arac arai arak arar arat arax arba arbi arc- arca arci arct aria arib arii arik arit arka arki arr- arra arrc arri arrk arrr arrt arta artc arti artr artx at-t at-x ataa atab atac atai atak atar atat atax atca atcc atck atcr atia atic atik atit atka atkt atra atrc atri atrk atrx atta atti attr axar axat axi- axia ba-i ba-x baaa baak baar baat baba babb babi babr bac- baca bacc baci back bact baia baib baic baik bair bait baix bak- baka baki bakr bakt bar- bara barb barc bari bark barr bart barx bata batc bati batt baxi baxt bbbb bbci bbrc bcaa bcar bcat bcbc bcca bccc bcci bcia bcit bcra bctc biak biar biat biba bibb bibi bica bicc bici bick bira birb biri birk birr birt birx bita bitc bitt bitx bixa bixi brab brac brai brak brat brax brca brcb bria bric brik brit brix brka brkb brrr brtc btaa btcc btcx btrc btrt bttb caaa caab caac caat caba cabi cac- caca cacc caci cack cacr caia caib caic caik cair cait caix caka cara carb carc cari cark carr cart carx cat- cata catb catc cati catt caxa cbac cbar cbat cbax cbbc cbca cbcc cbcr cbct cbia cbir cbit cbka cbkr cbrt cbta cbtc cbxa ccaa ccab ccac ccai ccar ccat ccba ccbc ccca cccb cccc ccci ccic ccii ccir ccix ccra ccrc ccri ccrt cctb cctc cctt ccxi ciaa ciak ciar ciat ciba cibc cibi cica cicc cici cicr cict ciia ciii ciit cika cikr cira cirb circ ciri cirk cirr cirt cita citb citi citt cixi ckac ckat ckbc ckbi ckbx ckck ckcx ckrc cktb crab crac crai crar crat crax crbc crca crcc crcr cria crib cric crik crit crkc crrt crtc ctab ctba ctbi ctca ctia ctic ctrc ctta cxii cxix cxxi cxxx iaaa iaac iaai iaat iaba iaca iacc iacr iact iaia iara iarc iart iata iatc iati ibac ibar ibat ibca ibia ibra ibrc ibri ibtb ibtc icaa icab icac icai icar icat icbc icca iccb iccc icci iccr icct icra icrc icrr icrt icta iiac iica iiii iiit iira iirc iita iitr iitt ikar ikat ikki ikra ikri irac irai irak irar irca ircc ircx iri- iria iric irix irka irki irra irrc irri irta irti itaa itac itai itak itar itat itia itic itra itri itta ixia ixxi k-ci kaaa kaab kaai kaak kaar kaat kaba kabb kabc kabi kabr kacb kacc kaci kact kaia kaib kaic kaii kaik kair kait kaka kakc kaki kakk kakt kakx kara karb kari kark karr kart karx kat- kata katb katc kati katk katr katt katx kaxa kbaa kbab kbac