-al -er -ic a-a a-b a-c a-i a-t aaa aab aac aae aaf aai aal aar aat aax ab- aba abb abc abe abf abi abl abr abt abx ac- aca acb acc ace acf aci acl acr act acx aea aeb aec aee aef aei ael aer aet aex af- afa afb afc afe aff afi afl afr aft afx ai- aia aib aic aie aif aii ail air ait aix al- ala alb alc ale alf ali all alr alt alx ar- ara arb arc are arf ari arl arr art arx at- ata atb atc ate atf ati atl atr att atx ax- axa axe axi axl axr axt axx baa bab bac bae baf bai bal bar bat bax bba bbb bbc bbe bbf bbi bbl bbr bbt bbx bca bcb bcc bce bcf bci bcl bcr bct bcx be- bea beb bec bee bef bei bel ber bet bex bfa bfb bfc bfe bff bfi bfl bfr bft bfx bi- bia bib bic bie bif bii bil bir bit bix bla blb blc ble blf bli bll blr blt blx bra brb bre brf bri brl brr brt brx bta btb btc bte btf bti btl btr btt btx bxb bxi bxl bxx c-- caa cab cac cae caf cai cal car cat cax cba cbb cbc cbe cbf cbi cbl cbr cbt cbx cca ccb ccc cce ccf cci ccl ccr cct ccx ce- cea ceb cec cee cef cei cel cer cet cex cfa cfb cfc cfe cff cfi cfl cfr cft cfx ci- cia cib cic cie cif cii cil cir cit cix cl- cla clb clc cle clf cli cll clr clt clx cra crb crc cre crf cri crl crr crt crx cta ctb ctc cte ctf cti ctl ctr ctt ctx cxc cxf cxi cxl cxr cxt cxx eaa eab eac eae eaf eai eal ear eat eax eba ebb ebc ebe ebf ebi ebl ebr ebt ebx ec- eca ecb ecc ece ecf eci ecl ecr ect ecx eea eeb eec eee eef eel eer eet eex ef- efa efb efc efe eff efi efl efr eft efx eia eib eic eie eif eii eil eir eit eix ela elb elc ele elf eli ell elr elt elx era erb erc ere erf eri erl err ert eta etb etc ete etf eti etl etr ett etx ex- exa exc exe exi exl exr ext exx faa fab fac fae faf fai fal far fat fax fba fbb fbc fbe fbf fbi fbl fbr fbt fbx fca fcb fcc fce fcf fci fcl fcr fct fcx fea feb fec fee fef fei fel fer fet fex ffa ffc ffe fff ffi ffl ffr fft ffx fia fib fic fie fif fii fil fir fit fix fla flb flc fle flf fli fll flr flt flx fra frb frc fre frf fri frl frr frt fta ftb ftc fte ftf fti ftl ftr ftt ftx fxe fxi fxr fxt fxx i-f ia- iaa iab iac iae iaf iai ial iar iat iba ibb ibc ibe ibf ibi ibl ibr ibt ibx ica icb icc ice icf ici icl icr ict ie- iea iec iee ief iei iel ier iet iex ifa ifb ifc ife iff ifi ifl ifr ift ifx iia iib iic iie iif iii iil iir iit iix il- ila ilb ilc ile ilf ili ill ilr ilt ilx ir- ira irb irc ire irf iri irl irr irt irx ita itb itc ite itf iti itl itt itx ixc ixe ixi ixl la- laa lab lac lae laf lai lal lar lat lax lba lbb lbc lbe lbf lbi lbl lbr lbt lbx lca lcb lcc lce lcf lci lcl lcr lct lcx lea leb lec lee lef lei lel ler let lex lfa lfb lfc lfe lff lfi lfl lfr lft lfx lia lib lic lie lif lii lil lir lit lix lla llb llc lle llf lli lll llr llt lra lrb lrc lrf lri lrr lrt lta ltb ltc lte ltf lti ltl ltr ltt ltx lxc lxi lxr lxx ra- raa rab rac rae raf rai ral rar rat rax rba rbb rbc rbe rbf rbi rbl rbr rbt rbx rca rcb rcc rce rcf rci rcl rcr rct rcx re- rea reb rec ree ref rei rel rer ret rex rfa rfb rfc rfe rff rfi rfl rfr rft ria rib ric rie rif rii ril rir rit rix rla rlc rle rlf rli rll rlr rlt rra rrb rrc rrf rri rrl rrr rrt rta rtb rtc rte rtf rti rtl rtr rtt rtx rxr t-x taa tab tac tae taf tai tal tar tat tax tba tbb tbc tbe tbf tbi tbl tbr tbt tca tcb tcc tce tcf tci tcl tcr tct tcx te- tea teb tec tee tef tei tel ter tet tex tfa tfb tfc tfe tff tfi tfl tfr tft tfx tia tib tic tie tif tii til tir tit tix tla tlc tle tlf tli tll tlr tlt tlx tra trb trc tre trf tri trl trr trt trx tta ttb ttc tte ttf tti ttl ttr ttt ttx txe txf txi txl txt xaa xac xaf xal xar xat xbc xbe xbl xbr xbx xcb xcf xci xcl xcr xcx xee xel xer xet xex xfa xfe xfl xft xfx xia xic xie xii xit xix xla xlb xlf xli xlr xlt xrc xrf xrt xrx xtc xtf xti xtr xtx xxi xxl xxx

a-be a-ii aaaa aaab aaac aaae aaaf aaai aaal aaar aaba aabb aabc aabi aabl aabt aaca aacb aacc aace aacf aaci aacl aacr aact aaea aaec aafa aafb aafc aaff aafi aafl aaib aaic aaii aala aalc aale aali aall aara aarc aare aari aart aata aatc aatf aatt abaa abab abac abae abaf abai abal abar abat abax abb- abba abbb abbe abbi abbr abbt abca abcb abcc abcf abci abcl abcr abct abec abee abel aber