-al -er -ol a-a a-b a-c a-t aaa aab aac aae aaf aal aao aar aat ab- aba abb abc abe abf abl abo abr abt ac- aca acb acc ace acf acl aco acr act aea aeb aec aee aef ael aeo aer aet af- afa afb afc afe aff afl afo afr aft al- ala alb alc ale alf all alo alr alt aoa aob aoc aoe aof aol aoo aor aot ar- ara arb arc are arf arl aro arr art at- ata atb atc ate atf atl ato atr att baa bab bac bae baf bal bao bar bat bba bbb bbc bbe bbf bbl bbo bbr bbt bca bcb bcc bce bcf bcl bco bcr bct be- bea beb bec bee bef bel beo ber bet bfa bfb bfc bfe bff bfl bfo bfr bft bla blb blc ble blf bll blo blr blt boa bob boc boe bof bol boo bor bot bra brb bre brf brl bro brr brt bta btb btc bte btf btl bto btr btt c-- caa cab cac cae caf cal cao car cat cba cbb cbc cbe cbf cbl cbo cbr cbt cca ccb ccc cce ccf ccl cco ccr cct ce- cea ceb cec cee cef cel ceo cer cet cfa cfb cfc cfe cff cfl cfo cfr cft cl- cla clb clc cle clf cll clo clr clt co- coa cob coc coe cof col coo cor cot cra crb crc cre crf crl cro crr crt cta ctb ctc cte ctf ctl cto ctr ctt eaa eab eac eae eaf eal eao ear eat eba ebb ebc ebe ebf ebl ebo ebr ebt ec- eca ecb ecc ece ecf ecl eco ecr ect eea eeb eec eee eef eel eeo eer eet ef- efa efb efc efe eff efl efo efr eft ela elb elc ele elf ell elo elr elt eo- eoa eob eoc eoe eof eol eoo eor eot era erb erc ere erf erl ero err ert eta etb etc ete etf etl eto etr ett faa fab fac fae faf fal fao far fat fba fbb fbc fbe fbf fbl fbo fbr fbt fca fcb fcc fce fcf fcl fco fcr fct fea feb fec fee fef fel feo fer fet ffa ffc ffe fff ffl ffo ffr fft fla flb flc fle flf fll flo flr flt foa fob foc foe fof fol foo for fot fra frb frc fre frf frl fro frr frt fta ftb ftc fte ftf ftl fto ftr ftt la- laa lab lac lae laf lal lao lar lat lba lbb lbc lbe lbf lbl lbo lbr lbt lca lcb lcc lce lcf lcl lco lcr lct lea leb lec lee lef lel leo ler let lfa lfb lfc lfe lff lfl lfo lfr lft lla llb llc lle llf lll llo llr llt loa lob loc loe lof lol loo lor lot lra lrb lrc lrf lro lrr lrt lta ltb ltc lte ltf ltl lto ltr ltt oaa oab oac oae oaf oal oao oar oat ob- oba obb obc obe obf obl obo obr obt oc- oca ocb occ ocf ocl oco ocr oct oea oeb oec oee oef oel oeo oer oet of- ofa ofb ofc ofe off ofl ofo ofr oft ola olb olc ole olf oll olo olt oo- ooa oob ooc oof ool ooo oor oot or- ora orb orc ore orf orl oro orr ort ot- ota otb otc ote otf otl oto otr ott ra- raa rab rac rae raf ral rao rar rat rba rbb rbc rbe rbf rbl rbo rbr rbt rca rcb rcc rce rcf rcl rco rcr rct re- rea reb rec ree ref rel reo rer ret rfa rfb rfc rfe rff rfl rfo rfr rft rla rlc rle rlf rll rlo rlr rlt roa rob roc roe rof rol roo ror rot rra rrb rrc rrf rrl rrr rrt rta rtb rtc rte rtf rtl rto rtr rtt taa tab tac tae taf tal tao tar tat tba tbb tbc tbe tbf tbl tbo tbr tbt tca tcb tcc tce tcf tcl tco tcr tct te- tea teb tec tee tef tel teo ter tet tfa tfb tfc tfe tff tfl tfo tfr tft tla tlc tle tlf tll tlo tlr tlt to- toa tob toc toe tof tol too tor tot tra trb trc tre trf trl tro trr trt tta ttb ttc tte ttf ttl tto ttr ttt

a-be aaaa aaab aaac aaae aaaf aaal aaar aaba aabb aabc aabl aabt aaca aacb aacc aace aacf aacl aaco aacr aact aaea aaec aafa aafb aafc aaff aafl aala aalc aale aall aalo aaoe aaoo aara aarc aare aaro aart aata aatc aatf aatt abaa abab abac abae abaf abal abar abat abb- abba abbb abbe abbo abbr abbt abca abcb abcc abcf abcl abcr abct abec abee abel aber abet abff abla able ablo aboa abob abof abol aboo abor abot abra abrc abro abta ac-t acaa acab acac acae acar acat acba acbl acca accc acce accf acco acct ace- acea acec acel acer acet acfc acfe acfl acft acla aclc acle aclr acoa acoe acol acor acot acr- acra acrc acre acro acrr acta actc acte actf actl acto actt aeac aeaf aecb aecl aect aeer aela aelc aer- aera aerc aero aeta aetc aetf aeto aetr aett afaa afao afar afat afca afcb afcc afee afel afer afet affa affc affo afft afla aflc afle afoa afoe afol afoo afor afr- afra afrc afre afro afta aftc afte alaa alac alae alal alao alar alat alb- alba albc albe albo alca alcc alce alco alea alec alee alef aleo aler alet alfa alfe all- alla alle alll allo allr aloa aloc aloe alof alol aloo alor alot alro alta alte alto aoba aoca aoce aola aole aora aorb aort aotc aotf arab arac arae araf aral arar arat arba arbe arc- arca arce arco arct