-er -ic a-a a-b a-c a-i a-t aaa aab aac aae aaf aai aar aas aat ab- aba abb abc abe abf abi abr abs abt ac- aca acb acc ace acf aci acr acs act aea aeb aec aee aef aei aer aes aet af- afa afb afc afe aff afi afr afs aft ai- aia aib aic aie aif aii air ais ait ar- ara arb arc are arf ari arr ars art as- asa asb asc ase asf asi asr ass ast at- ata atb atc ate atf ati atr ats att baa bab bac bae baf bai bar bas bat bba bbb bbc bbe bbf bbi bbr bbs bbt bca bcb bcc bce bcf bci bcr bcs bct be- bea beb bec bee bef bei ber bes bet bfa bfb bfc bfe bff bfi bfr bfs bft bi- bia bib bic bie bif bii bir bis bit bra brb bre brf bri brr brs brt bsa bsb bsc bse bsf bsi bsr bss bst bta btb btc bte btf bti btr bts btt c-- caa cab cac cae caf cai car cas cat cba cbb cbc cbe cbf cbi cbr cbs cbt cca ccb ccc cce ccf cci ccr ccs cct ce- cea ceb cec cee cef cei cer ces cet cfa cfb cfc cfe cff cfi cfr cfs cft ci- cia cib cic cie cif cii cir cis cit cra crb crc cre crf cri crr crs crt csa csb csc cse csf csi csr css cst cta ctb ctc cte ctf cti ctr cts ctt eaa eab eac eae eaf eai ear eas eat eba ebb ebc ebe ebf ebi ebr ebs ebt ec- eca ecb ecc ece ecf eci ecr ecs ect eea eeb eec eee eef eer ees eet ef- efa efb efc efe eff efi efr efs eft eia eib eic eie eif eii eir eis eit era erb erc ere erf eri err ers ert es- esa esb esc ese esf esi esr ess est eta etb etc ete etf eti etr ets ett faa fab fac fae faf fai far fas fat fba fbb fbc fbe fbf fbi fbr fbs fbt fca fcb fcc fce fcf fci fcr fcs fct fea feb fec fee fef fei fer fes fet ffa ffc ffe fff ffi ffr ffs fft fia fib fic fie fif fii fir fis fit fra frb frc fre frf fri frr frs frt fsa fsb fsc fse fsf fsi fsr fss fst fta ftb ftc fte ftf fti ftr fts ftt i-f ia- iaa iab iac iae iaf iai iar ias iat iba ibb ibc ibe ibf ibi ibr ibs ibt ica icb icc ice icf ici icr ics ict ie- iea iec iee ief iei ier ies iet ifa ifb ifc ife iff ifi ifr ifs ift iia iib iic iie iif iii iir iis iit ir- ira irb irc ire irf iri irr irs irt is- isa isb isc ise isf isi isr iss ist ita itb itc ite itf iti its itt ra- raa rab rac rae raf rai rar ras rat rba rbb rbc rbe rbf rbi rbr rbs rbt rca rcb rcc rce rcf rci rcr rcs rct re- rea reb rec ree ref rei rer res ret rfa rfb rfc rfe rff rfi rfr rfs rft ria rib ric rie rif rii rir ris rit rra rrb rrc rrf rri rrr rrs rrt rsa rsb rsc rse rsf rsi rsr rss rst rta rtb rtc rte rtf rti rtr rts rtt saa sab sac sae saf sai sar sas sat sba sbb sbc sbe sbf sbi sbr sbs sbt sca scb scc sce scf sci scr scs sct se- sea seb sec see sef sei ser ses set sfa sfb sfc sfe sff sfi sfr sfs sft sia sib sic sie sif sii sir sis sit sr- sra srb src sre srf sri srr srs srt ss- ssa ssb ssc sse ssf ssi ssr sss sst sta stb stc ste stf sti str sts stt taa tab tac tae taf tai tar tas tat tba tbb tbc tbe tbf tbi tbr tbs tbt tca tcb tcc tce tcf tci tcr tcs tct te- tea teb tec tee tef tei ter tes tet tfa tfb tfc tfe tff tfi tfr tfs tft tia tib tic tie tif tii tir tis tit tra trb trc tre trf tri trr trs trt tsa tsb tsc tse tsf tsi tsr tss tst tta ttb ttc tte ttf tti ttr tts ttt

-ase a-be a-ii aaaa aaab aaac aaae aaaf aaai aaar aaas aaba aabb aabc aabi aabt aaca aacb aacc aace aacf aaci aacr aacs aact aaea aaec aaes aafa aafb aafc aaff aafi aaib aaic aaii aais aara aarc aare aari aars aart aasa aasc aase aasf aasi aass aast aata aatc aatf aatt abaa abab abac abae abaf abai abar abas abat abb- abba abbb abbe abbi abbr abbs abbt abca abcb abcc abcf abci abcr abcs abct abec abee aber abes abet abff abia abib abic abie abir abis abit abra abrc abri abrs abs- absa abse absf absi abss abta abts ac-t acaa acab acac acae acai acar acas acat acba acca accc acce accf acci accs acct ace- acea acec acer aces acet acfc acfe acfi acfs acft aci- acia acic acie acif acir acis acr- acra acrc acre acri acrr acrs acsa acsc acse acsi acss acst acta actc acte actf acti acts actt aeac aeaf aeas aebi aebs aecb aeci aect aeer aeit aer- aera aerc aeri aers aesc aess aest aeta aetc aetf aetr aett afaa afar afat afbs afca afcb afcc afci afcs afee afer afes afet affa affc affi affs afft afia afib afif afir afis afit afr- afra afrc afre afri afrs afsa afsb afsc afst afta aftc afte afts aiai aias aiba aica aicc aice aicf aicr aics aiea aiee aiet aiff aifs aiia aiib aiic aiir aira aire airi airs airt aisa