-al a-a a-b a-c a-t aaa aab aac aae aal aap aat aax ab- aba abb abc abe abl abp abt abx ac- aca acb acc ace acl acp act acx aea aeb aec aee ael aep aet aex al- ala alb alc ale all alp alt alx ap- apa apb apc ape apl app apt apx at- ata atb atc ate atl atp att atx ax- axa axe axl axp axt axx b-p baa bab bac bae bal bap bat bax bba bbb bbc bbe bbl bbp bbt bbx bca bcb bcc bce bcl bcp bct bcx be- bea beb bec bee bel bep bet bex bla blb blc ble bll blp blt blx bpa bpb bpc bpe bpl bpp bpt bpx bta btb btc bte btl btp btt btx bxb bxl bxx c-- caa cab cac cae cal cap cat cax cba cbb cbc cbe cbl cbp cbt cbx cca ccb ccc cce ccl ccp cct ccx ce- cea ceb cec cee cel cep cet cex cl- cla clb clc cle cll clp clt clx cpa cpb cpc cpe cpl cpp cpt cpx cta ctb ctc cte ctl ctp ctt ctx cxc cxl cxp cxt cxx eaa eab eac eae eal eap eat eax eba ebb ebc ebe ebl ebp ebt ebx ec- eca ecb ecc ece ecl ect ecx eea eeb eec eee eel eep eet eex ela elb elc ele ell elp elt elx ep- epa epb epc epe epl epp ept epx eta etb etc ete etl etp ett etx ex- exa exc exe exl exp ext exx l-p la- laa lab lac lae lal lap lat lax lba lbb lbc lbe lbl lbp lbt lbx lca lcb lcc lce lcl lcp lct lcx lea leb lec lee lel lep let lex lla llb llc lle lll llp llt lpa lpb lpc lpe lpl lpp lpt lpx lta ltb ltc lte ltl ltp ltt ltx lxc lxx p-p paa pab pac pae pal pap pat pax pba pbb pbc pbe pbl pbp pbt pbx pca pcb pcc pce pcl pcp pct pcx pea peb pec pee pel pep pet pex pla plb plc ple pll plp plt plx ppa ppb ppc ppe ppl ppp ppt ppx pt- pta ptb ptc pte ptl ptp ptt ptx pxc pxe pxl pxt t-x taa tab tac tae tal tap tat tax tba tbb tbc tbe tbl tbp tbt tca tcb tcc tce tcl tcp tct tcx te- tea teb tec tee tel tep tet tex tla tlc tle tll tlp tlt tlx tpa tpb tpc tpe tpl tpp tpt tpx tta ttb ttc tte ttl ttp ttt ttx txe txl txt xaa xac xal xap xat xbc xbe xbl xbx xcb xcl xcp xcx xee xel xep xet xex xla xlb xlt xpa xpb xpc xpe xpl xpp xpt xtc xtp xtx xxl xxp xxx

a-be aaaa aaab aaac aaae aaal aaap aaba aabb aabc aabl aabp aabt aaca aacb aacc aace aacl aacp aact aaea aaec aaep aala aalc aale aall aapa aapc aapl aapt aata aatc aatt abaa abab abac abae abal abap abat abax abb- abba abbb abbe abbt abca abcb abcc abcl abcp abct abec abee abel abet abla able abpa abpc abpp abta ac-t acaa acab acac acae acap acat acba acbl acca accc acce accp acct ace- acea acec acel acet acla aclc acle acpa acpe acpt acta actc acte actl actt aeac aeap aecb aecl aect aela aelc aelp aeta aetc aett aetx al-p alaa alac alae alal alap alat alb- alba albc albe alca alcc alce alea alec alee alep alet alex all- alla alle alll alpa alpe alpl alta alte altx alxa apac apal apap apat apax apba apca apcb apcc apea apec apel apep apet apex apl- apla aple aplp aplx appa appc appl appt appx apta aptc apte aptt aptx at-l at-t at-x ataa atab atac atae atal atap atat atax atca atcc atcl atea atec atee atel atep atex atla atle atta atte attp axal axat axce axel axle ba-x baaa baal baat baba babb babe bac- baca bacc bace bact bael bala balc bale ball balt bapa bapc bape bapp bapt bata batc bate batt baxt bbbb bbeb bbet bblb bcaa bcap bcat bcbc bcbp bcca bccc bccl bcec bcet bcpl bcpp bctc beal beap beat beba bebb bebe beca beeb beel beep beet bela bele bell belp belt beta betc bete bett blaa blab blac blae blat blbt blea bleb blee blet bpcp bpea bpel btaa btbp btcc btcl btcx btec btex btla btlp bttb caaa caab caac caal caap caat caba cabe cac- caca cacc cace caec caex cala calc cale call calp calt calx capa capb capc cape capp capt capx cat- cata catb catc cate catt caxa cbac cbal cbat cbax cbbc cbca cbcc cbce cbcl cbcp cbct cbea cbec cbee cbet cblb cblc cbpc cbpp cbta cbtc cbtl cbxa ccaa ccab ccac ccap ccat ccba ccbc ccca cccb cccc cccl cccp ccee ccel ccla cclc cclx ccpa ccpe ccpl ccpp cctb cctc cctl cctt ccxl ceac ceal ceat ceba cebp cec- ceca cece cecp cect ceeb ceec ceel cel- cela celc cele cell celt cepa cepc cepe cepp cept cet- ceta cete cetp cexe clab clap clat clea clec clee clep clet clpb clpp clpx cltb cltc clxx cpaa cpac cpap cpbc cpca cpce cpea cpeb cpep cplc cppa cptp ctab ctae ctal ctba ctca ctcp ctec ctep ctle ctpp ctta cxxx e-cl e-la eaba eaca eacc eaec eala ealc eale eapc eapp eata eate eaxl ebac ebal ebba ebbc ebcc ebel ebla ecaa ecac ecal ecat ecbc ecbe ecca eccb eccc ecce eccl ecct ecla eclt ecpa ecpp ect- ecta ectc eeca eeea eeee eele eeta eetc eete eext el-b el-p elab elac elal elat elba elbe elca elcb elce elea elec elee elet elex ella elle elpe elta elte epaa epac epcc epec epee eple epll eppa eppc eppp epta epte epxp etal etap etat etbc etcc etec