-al -ol a-a a-b a-c a-t aaa aab aac aae aal aao aat aax ab- aba abb abc abe abl abo abt abx ac- aca acb acc ace acl aco act acx aea aeb aec aee ael aeo aet aex al- ala alb alc ale all alo alt alx aoa aob aoc aoe aol aoo aot aox at- ata atb atc ate atl ato att atx ax- axa axe axl axo axt axx baa bab bac bae bal bao bat bax bba bbb bbc bbe bbl bbo bbt bbx bca bcb bcc bce bcl bco bct bcx be- bea beb bec bee bel beo bet bex bla blb blc ble bll blo blt blx boa bob boc boe bol boo bot box bta btb btc bte btl bto btt btx bxb bxl bxo bxx c-- caa cab cac cae cal cao cat cax cba cbb cbc cbe cbl cbo cbt cbx cca ccb ccc cce ccl cco cct ccx ce- cea ceb cec cee cel ceo cet cex cl- cla clb clc cle cll clo clt clx co- coa cob coc coe col coo cot cox cta ctb ctc cte ctl cto ctt ctx cxc cxl cxo cxt cxx eaa eab eac eae eal eao eat eax eba ebb ebc ebe ebl ebo ebt ebx ec- eca ecb ecc ece ecl eco ect ecx eea eeb eec eee eel eeo eet eex ela elb elc ele ell elo elt elx eo- eoa eob eoc eoe eol eoo eot eta etb etc ete etl eto ett etx ex- exa exc exe exl exo ext exx la- laa lab lac lae lal lao lat lax lba lbb lbc lbe lbl lbo lbt lbx lca lcb lcc lce lcl lco lct lcx lea leb lec lee lel leo let lex lla llb llc lle lll llo llt loa lob loc loe lol loo lot lox lta ltb ltc lte ltl lto ltt ltx lxc lxo lxx oaa oab oac oae oal oao oat oax ob- oba obb obc obe obl obo obt obx oc- oca ocb occ ocl oco oct ocx oea oeb oec oee oel oeo oet oex ola olb olc ole oll olo olt oo- ooa oob ooc ool ooo oot oox ot- ota otb otc ote otl oto ott ox- oxa oxb oxc oxo oxt oxx t-x taa tab tac tae tal tao tat tax tba tbb tbc tbe tbl tbo tbt tca tcb tcc tce tcl tco tct tcx te- tea teb tec tee tel teo tet tex tla tlc tle tll tlo tlt tlx to- toa tob toc toe tol too tot tox tta ttb ttc tte ttl tto ttt ttx txe txl txt xaa xac xal xat xbc xbe xbl xbx xcb xcl xcx xee xel xet xex xla xlb xlt xoa xoc xoo xot xox xtc xtx xxl xxo xxx

a-be aaaa aaab aaac aaae aaal aaba aabb aabc aabl aabt aaca aacb aacc aace aacl aaco aact aaea aaec aala aalc aale aall aalo aaoe aaoo aata aatc aatt abaa abab abac abae abal abat abax abb- abba abbb abbe abbo abbt abca abcb abcc abcl abct abec abee abel abet abla able ablo aboa abob abol aboo abot abox abta ac-t acaa acab acac acae acat acba acbl acca accc acce acco acct ace- acea acec acel acet acla aclc acle acoa acoe acol acot acta actc acte actl acto actt aeac aecb aecl aect aela aelc aeta aetc aeto aett aetx alaa alac alae alal alao alat alb- alba albc albe albo alca alcc alce alco alea alec alee aleo alet alex all- alla alle alll allo aloa aloc aloe alol aloo alot alta alte alto altx alxa aoba aoca aoce aola aole aotc at-l at-t at-x ataa atab atac atae atal atat atax atca atcc atcl atco atea atec atee atel ateo atex atla atle atlo atob atoc atoe atol atot atta atte atto axal axat axce axel axle axo- axoa axto axxo ba-x baaa baal baat baba babb babe babo bac- baca bacc bace baco bact bael bala balc bale ball balo balt baol bata batc bate bato batt baxt bbbb bbeb bbet bblb bbox bcaa bcat bcbc bcca bccc bccl bcec bcet bctc beal beat beba bebb bebe bebo beca beeb beel beet bela bele bell belo belt beo- beot beta betc bete beto bett blaa blab blac blae blat blbt blea bleb blee bleo blet blob bloc bloo blot boab boac boal boat boba bobb bobe bobo boca boce boco boea boec boee boel boeo boet bola bole boll bolo bolt boob booc booe bool boot boox bota botb bote boto bott boxa btaa btcc btcl btcx btec btex btla btob bttb c-bo caaa caab caac caal caat caba cabe cabo cac- caca cacc cace caco caec caex cala calc cale call calo calt calx caol cat- cata catb catc cate cato catt caxa cbac cbal cbat cbax cbbc cbca cbcc cbce cbcl cbct cbea cbec cbee cbet cblb cblc cbol cbot cbox cbta cbtc cbtl cbxa ccaa ccab ccac ccat ccba ccbc ccca cccb cccc cccl ccee ccel ccla cclc cclx ccob ccoc cctb cctc cctl cctt ccxl ceac ceal ceat ceba cec- ceca cece ceco cect ceeb ceec ceel cel- cela celc cele cell celo celt ceol cet- ceta cete ceto cexe clab clat clea clec clee cleo clet clob cloe cloo clot clox cltb cltc clxx coal coat coax coba cobb cobe cobo coca coce coco coct coel coex col- cola colb cole coll colo colt coob cool coot cota cotb cotc cote coto cott coxa coxe ctab ctae ctal ctba ctca ctec ctle ctol ctot ctta cxxx e-cl e-la eaba eaca eacc eaec eala ealc eale eata eate eaxl ebac ebal ebba ebbc ebbo ebcc ebel ebla eboe ebol eboo ebox ecaa ecac ecal ecao ecat ecbc ecbe ecca eccb eccc ecce eccl ecco ecct ecla eclt eco- ecol ecot ect- ecta ectc ecto eeca eeea eeee eele eeoc eeta eetc eete eext el-b elab