-er a-a a-b a-c a-t aaa aab aac aad aae aar aat aax ab- aba abb abc abd abe abr abt abx ac- aca acb acc acd ace acr act acx ad- ada adb adc add ade adr adt adx aea aeb aec aed aee aer aet aex ar- ara arb arc ard are arr art arx at- ata atb atc atd ate atr att atx ax- axa axe axr axt axx baa bab bac bad bae bar bat bax bba bbb bbc bbd bbe bbr bbt bbx bca bcb bcc bcd bce bcr bct bcx bda bdb bdc bdd bde bdr bdt bdx be- bea beb bec bed bee ber bet bex bra brb brd bre brr brt brx bta btb btc btd bte btr btt btx bxb bxd bxx c-- caa cab cac cad cae car cat cax cba cbb cbc cbd cbe cbr cbt cbx cca ccb ccc ccd cce ccr cct ccx cda cdb cdc cdd cde cdr cdt cdx ce- cea ceb cec ced cee cer cet cex cra crb crc crd cre crr crt crx cta ctb ctc ctd cte ctr ctt ctx cxc cxr cxt cxx daa dab dac dad dae dar dat dax dba dbb dbc dbd dbe dbr dbt dbx dca dcb dcc dcd dce dcr dct dcx dda ddb ddc ddd dde ddr ddt ddx de- dea deb dec ded dee der det dex dra drb drc drd dre drr drt drx dta dtb dtc dtd dte dtr dtt dtx dxc dxd dxr dxt dxx eaa eab eac ead eae ear eat eax eba ebb ebc ebd ebe ebr ebt ebx ec- eca ecb ecc ecd ece ecr ect ecx ed- eda edb edc edd ede edr edt edx eea eeb eec eed eee eer eet eex era erb erc erd ere err ert eta etb etc etd ete etr ett etx ex- exa exc exd exe exr ext exx ra- raa rab rac rad rae rar rat rax rba rbb rbc rbd rbe rbr rbt rbx rca rcb rcc rcd rce rcr rct rcx rda rdb rdc rdd rde rdr rdt rdx re- rea reb rec red ree rer ret rex rra rrb rrc rrd rrr rrt rta rtb rtc rtd rte rtr rtt rtx rxr t-x taa tab tac tad tae tar tat tax tba tbb tbc tbd tbe tbr tbt tca tcb tcc tcd tce tcr tct tcx tda tdb tdc tdd tde tdr tdt tdx te- tea teb tec ted tee ter tet tex tra trb trc trd tre trr trt trx tta ttb ttc ttd tte ttr ttt ttx txe txt xaa xac xad xar xat xbc xbe xbr xbx xcb xcd xcr xcx xda xdb xdc xde xdr xdt xed xee xer xet xex xrc xrd xrt xrx xtc xtr xtx xxx

a-be aaaa aaab aaac aaad aaae aaar aaba aabb aabc aabd aabt aaca aacb aacc aacd aace aacr aact aada aadc aade aadt aaea aaec aara aarc aard aare aart aata aatc aatt abaa abab abac abad abae abar abat abax abb- abba abbb abbe abbr abbt abca abcb abcc abcd abcr abct abda abec abed abee aber abet abra abrc abta ac-t acaa acab acac acad acae acar acat acba acca accc accd acce acct acda acdb acdc acde acdt ace- acea acec aced acer acet acr- acra acrc acre acrr acta actc acte actt adaa adab adac adad adae adar adat adba adbc adcc adda addc addd adde addr adea adeb adee ader adet adra adre adta aeac aecb aect aede aedt aeer aer- aera aerc aerd aeta aetc aetr aett aetx arab arac arad arae arar arat arax arba arbe arc- arca arce arct arda ardc arde area arec ared aree aret arex arr- arra arrc arre arrr arrt arta artc arte artr artx at-t at-x ataa atab atac atad atae atar atat atax atca atcc atcr atdt atea atec ated atee ater atex atra atrc atre atrx atta atte attr axar axat axce axed axer ba-x baaa baad baar baat baba babb babe babr bac- baca bacc bace bact bada badb badd bade badr baed baer bar- bara barb barc bard bare barr bart barx bata batc bate batt baxt bbad bbbb bbdd bbeb bbet bbrc bcaa bcar bcat bcbc bcca bccc bcda bcde bcec bcer bcet bcra bctc bd-r bdbc bddc bead bear beat beba bebb bebe beca beda bede beeb beed beer beet bera berc berd bere berr bert beta betc bete bett brab brac brad brae brat brax brca brcb brce brda brdt brea breb brec bred bree brer bret brex brrr brtc btaa btcc btcx btdt btec btex btrc btrt bttb c-cd caaa caab caac caat caba cabe cac- caca cacc cace cacr cada cadc cadd cade cadr caec caer caex cara carb carc card care carr cart carx cat- cata catb catc catd cate catt caxa cbac cbar cbat cbax cbbc cbca cbcc cbce cbcr cbct cbdb cbdc cbea cbec cbee cber cbet cbrd cbre cbrt cbta cbtc cbxa ccaa ccab ccac ccad ccar ccat ccba ccbc ccca cccb cccc ccdc ccdr cced ccee ccra ccrc ccre ccrt cctb cctc cctt cd-e cd-r cdaa cdac cdad cdax cdba cdda cddb cddr cdec cder cdex cdre ceac cead cear ceat ceba cec- ceca cece cect ceda cedd cede cedt ceeb ceec cer- cera cerc cerd cere cert cet- ceta cete cexe crab crac crar crat crax crbc crca crcc crce crcr crda crdc cre- crea creb crec cred cree cret crex crrt crtc ctab ctae ctba ctca ctec ctrc ctta cxxx daab daad daae daar daba dabb dabt daca dace dact dada dade daeb daer dara darb darc dard dare darr dart data date datr datt dbar dbcc dbtt dcbc dcca dccb dccc dcct dcdb dcra dctc dcxx dddd ddrc ddre deac dead deae dear deba debe debt dec- deca decc decd dece dect deda dedd dede deeb deed deer deet der- dera derb derc dere derr deta dete detr dex- dexa dexe dext