-er a-a a-b a-c aaa aab aac aad aae aaf aar aas ab- aba abb abc abd abe abf abr abs ac- aca acb acc acd ace acf acr acs ad- ada adb adc add ade adf adr ads aea aeb aec aed aee aef aer aes af- afa afb afc afd afe aff afr afs ar- ara arb arc ard are arf arr ars as- asa asb asc asd ase asf asr ass baa bab bac bad bae baf bar bas bba bbb bbc bbd bbe bbf bbr bbs bca bcb bcc bcd bce bcf bcr bcs bda bdb bdc bdd bde bdf bdr bds be- bea beb bec bed bee bef ber bes bfa bfb bfc bfd bfe bff bfr bfs bra brb brd bre brf brr brs bsa bsb bsc bsd bse bsf bsr bss c-- caa cab cac cad cae caf car cas cba cbb cbc cbd cbe cbf cbr cbs cca ccb ccc ccd cce ccf ccr ccs cda cdb cdc cdd cde cdf cdr cds ce- cea ceb cec ced cee cef cer ces cfa cfb cfc cfd cfe cff cfr cfs cra crb crc crd cre crf crr crs csa csb csc csd cse csf csr css daa dab dac dad dae daf dar das dba dbb dbc dbd dbe dbf dbr dbs dca dcb dcc dcd dce dcf dcr dcs dda ddb ddc ddd dde ddf ddr dds de- dea deb dec ded dee def der des dfa dfb dfc dfd dfe dff dfr dfs dra drb drc drd dre drr drs dsa dsb dsc dsd dse dsf dsr dss eaa eab eac ead eae eaf ear eas eba ebb ebc ebd ebe ebf ebr ebs ec- eca ecb ecc ecd ece ecf ecr ecs ed- eda edb edc edd ede edf edr eds eea eeb eec eed eee eef eer ees ef- efa efb efc efd efe eff efr efs era erb erc erd ere erf err ers es- esa esb esc esd ese esf esr ess faa fab fac fad fae faf far fas fba fbb fbc fbd fbe fbf fbr fbs fca fcb fcc fcd fce fcf fcr fcs fda fdb fdc fdd fde fdf fdr fds fea feb fec fed fee fef fer fes ffa ffc ffd ffe fff ffr ffs fra frb frc frd fre frf frr frs fsa fsb fsc fsd fse fsf fsr fss ra- raa rab rac rad rae raf rar ras rba rbb rbc rbd rbe rbf rbr rbs rca rcb rcc rcd rce rcf rcr rcs rda rdb rdc rdd rde rdf rdr rds re- rea reb rec red ree ref rer res rfa rfb rfc rfd rfe rff rfr rfs rra rrb rrc rrd rrf rrr rrs rsa rsb rsc rsd rse rsf rsr rss saa sab sac sad sae saf sar sas sba sbb sbc sbd sbe sbf sbr sbs sca scb scc scd sce scf scr scs sda sdb sdc sdd sde sdf sdr sds se- sea seb sec sed see sef ser ses sfa sfb sfc sfd sfe sff sfr sfs sr- sra srb src srd sre srf srr srs ss- ssa ssb ssc ssd sse ssf ssr sss

-ase a-be aaaa aaab aaac aaad aaae aaaf aaar aaas aaba aabb aabc aabd aaca aacb aacc aacd aace aacf aacr aacs aada aadc aade aads aaea aaec aaes aafa aafb aafc aafd aaff aara aarc aard aare aars aasa aasc aasd aase aasf aass abaa abab abac abad abae abaf abar abas abb- abba abbb abbe abbr abbs abca abcb abcc abcd abcf abcr abcs abda abec abed abee aber abes abff abra abrc abrs abs- absa absd abse absf abss acaa acab acac acad acae acar acas acba acca accc accd acce accf accs acda acdb acdc acde acdf acds ace- acea acec aced acer aces acfc acfd acfe acfs acr- acra acrc acre acrr acrs acsa acsc acsd acse acss adaa adab adac adad adae adar adas adba adbc adcc adcs adda addc addd adde addr adds adea adeb adee ader ades adfa adfc adfs adra adre adrs adsa adsr adss aeac aeaf aeas aebs aecb aede aeer aer- aera aerc aerd aers aesc aesd aess afaa afad afar afbs afca afcb afcc afcs afdb afdc afee afer afes affa affc affs afr- afra afrc afre afrs afsa afsb afsc arab arac arad arae araf arar aras arba arbe arbs arc- arca arce arcs arda ardc arde ardf ards area arec ared aree aref ares arfa arfb arfc arff arfs arr- arra arrc arre arrr arrs ars- arsa arsc arsd arse asaa asab asac asad asae asaf asar asas asba asc- asca ascb ascc asce ascr asda asde asdf asds asea asec asee aser ases asfa asra asrc asrs assa assc assd asse assr asss baaa baad baaf baar baas baba babb babe babr babs bac- baca bacc bace bacs bada badb badd bade badr bads baed baer baes bafc baff bar- bara barb barc bard bare barf barr bars basa basc base basf bass bbad bbas bbbb bbbs bbdd bbeb bbfc bbrc bcaa bcar bcas bcbc bcbs bcca bccc bccs bcda bcde bcds bcec bcer bces bcfc bcra bcrs bcsa bcsc bcss bd-r bdbc bddc bdes bdsd bead beaf bear beas beba bebb bebe beca becs beda bede beds beeb beed beef beer bees befa befe beff bera berc berd bere berr bers bes- besa bese bess bfas bfca bfcs bffs bfsr brab brac brad brae braf bras brca brcb brce brda brds brea breb brec bred bree bref brer bres brfc brrr brrs brsb brsr bsaa bsac bsas bsbd bscs bsea bseb bsec bsed bsee bser bses bsfa bsfc bsff bsfs bsra bsrd bssc bssd bsse c-cd caaa caab caac caaf caas caba cabe cabf cabs cac- caca cacc cace cacr cada cadc cadd cade cadr cads caec caer caes cafa cafb cafc cafe caff cafs cara carb carc card care carf carr cars casa casb casc casd case casr cass cbac cbar cbbc