-al -ol a-a a-b a-c a-t aaa aab aac aae aak aal aao aat aax ab- aba abb abc abe abk abl abo abt abx ac- aca acb acc ace ack acl aco act acx aea aeb aec aee aek ael aeo aet aex aka akb akc ake akk akl ako al- ala alb alc ale alk all alo alt alx aoa aob aoc aoe aok aol aoo aot aox at- ata atb atc ate atl ato att atx ax- axa axe axk axl axo axt axx baa bab bac bae bak bal bao bat bax bba bbb bbc bbe bbk bbl bbo bbt bbx bca bcb bcc bce bck bcl bco bct bcx be- bea beb bec bee bek bel beo bet bex bka bkb bkc bke bkk bkl bko bkt bkx bla blb blc ble blk bll blo blt blx boa bob boc boe bok bol boo bot box bta btb btc bte btk btl bto btt btx bxb bxl bxo bxx c-- caa cab cac cae cak cal cao cat cax cba cbb cbc cbe cbk cbl cbo cbt cbx cca ccb ccc cce cck ccl cco cct ccx ce- cea ceb cec cee cek cel ceo cet cex cka ckb ckc cko ckt ckx cl- cla clb clc cle clk cll clo clt clx co- coa cob coc coe cok col coo cot cox cta ctb ctc cte ctk ctl cto ctt ctx cxc cxk cxl cxo cxt cxx eaa eab eac eae eak eal eao eat eax eba ebb ebc ebe ebk ebl ebo ebt ebx ec- eca ecb ecc ece eck ecl eco ect ecx eea eeb eec eee eek eel eeo eet eex eka ekb ekc eke ekl eko ekt ela elb elc ele elk ell elo elt elx eo- eoa eob eoc eoe eok eol eoo eot eta etb etc ete etk etl eto ett etx ex- exa exc exe exl exo ext exx k-t ka- kaa kab kac kae kak kal kao kat kax kba kbb kbc kbe kbk kbl kbo kbx kca kcb kcc kce kck kcl kct kcx ke- kea keb kec kee kek kel keo ket kex kkb kkc kke kkk kkl kkt kl- kla klb klc klo klt klx koa kob koc koe kok kol koo kot kta ktb ktc kte ktk ktl kto ktt kxl kxo la- laa lab lac lae lak lal lao lat lax lba lbb lbc lbe lbk lbl lbo lbt lbx lca lcb lcc lce lck lcl lco lct lcx lea leb lec lee lek lel leo let lex lka lkb lkl lkt lla llb llc lle llk lll llo llt loa lob loc loe lok lol loo lot lox lta ltb ltc lte ltk ltl lto ltt ltx lxc lxo lxx oaa oab oac oae oak oal oao oat oax ob- oba obb obc obe obk obl obo obt obx oc- oca ocb occ ock ocl oco oct ocx oea oeb oec oee oel oeo oet oex oka okb okc oke okk okl oko ola olb olc ole olk oll olo olt oo- ooa oob ooc ook ool ooo oot oox ot- ota otb otc ote otk otl oto ott ox- oxa oxb oxc oxo oxt oxx t-x taa tab tac tae tak tal tao tat tax tba tbb tbc tbe tbk tbl tbo tbt tca tcb tcc tce tck tcl tco tct tcx te- tea teb tec tee tek tel teo tet tex tka tkb tkc tke tkk tkl tko tkt tla tlc tle tlk tll tlo tlt tlx to- toa tob toc toe tok tol too tot tox tta ttb ttc tte ttk ttl tto ttt ttx txe txk txl txt xaa xac xak xal xat xbc xbe xbl xbx xcb xcl xcx xee xel xet xex xkb xke xkl xla xlb xlt xoa xoc xok xoo xot xox xtc xtx xxl xxo xxx

a-ak a-be a-ok aaaa aaab aaac aaae aaal aaba aabb aabc aabl aabt aaca aacb aacc aace aack aacl aaco aact aaea aaec aaka aake aala aalc aale aall aalo aaoe aaoo aata aatc aatk aatt abaa abab abac abae abak abal abat abax abb- abba abbb abbe abbo abbt abca abcb abcc abcl abct abec abee abel abet abla able ablo aboa abob abok abol aboo abot abox abta ac-t acaa acab acac acae acat acba acbl acca accc acce acco acct ace- acea acec acek acel acet acke acla aclc acle acoa acoe acol acot acta actc acte actl acto actt aeac aecb aecl aect aeka aela aelc aeta aetc aeto aett aetx akaa akae akal akao akca akee akel akka akko akle aklo akok akot akte alaa alac alae alak alal alao alat alb- alba albc albe albo alca alcc alce alco alea alec alee alek aleo alet alex alk- alka alkb alke alko all- alla alle alll allo aloa aloc aloe alok alol aloo alot alta alte alto altx alxa aoba aoca aoce aola aole aotc at-l at-t at-x ataa atab atac atae atak atal atat atax atca atcc atck atcl atco atea atec atee atel ateo atex atka atkt atla atle atlo atob atoc atoe atok atol atot atta atte atto axal axat axce axel axle axo- axoa axto axxo ba-x baaa baak baal baat baba babb babe babo bac- baca bacc bace back baco bact baek bael bak- baka bake bakl bako bakt bala balc bale balk ball balo balt baol bata batc bate bato batt baxt bbbb bbeb bbet bblb bbox bcaa bcat bcbc bcca bccc bccl bcec bcet bctc beak beal beat beba bebb bebe bebo beca beck beeb beek beel beet beka beke beko bela bele belk bell belo belt beo- beok beot beta betc bete beto bett blaa blab blac blae blak blat blbt blea bleb blee blek bleo blet blkb blob bloc blok bloo blot boab boac boak boal boat boba bobb bobe bobo boca boce bock boco boea boec boee boel boeo boet boka boke boko bola bole bolk boll bolo bolt boob