-er a-a a-b a-c aaa aab aac aad aae aaf aah aar ab- aba abb abc abd abe abf abh abr ac- aca acb acc acd ace acf ach acr ad- ada adb adc add ade adf adh adr aea aeb aec aed aee aef aeh aer af- afa afb afc afd afe aff afh afr aha ahb ahc ahd ahe ahf ahh ahr ar- ara arb arc ard are arf arh arr baa bab bac bad bae baf bah bar bba bbb bbc bbd bbe bbf bbh bbr bca bcb bcc bcd bce bcf bch bcr bda bdb bdc bdd bde bdf bdh bdr be- bea beb bec bed bee bef beh ber bfa bfb bfc bfd bfe bff bfh bfr bha bhb bhc bhd bhe bhf bhh bhr bra brb brd bre brf brh brr c-- caa cab cac cad cae caf cah car cba cbb cbc cbd cbe cbf cbh cbr cca ccb ccc ccd cce ccf cch ccr cda cdb cdc cdd cde cdf cdh cdr ce- cea ceb cec ced cee cef ceh cer cfa cfb cfc cfd cfe cff cfh cfr ch- cha chb chc chd che chf chh chr cra crb crc crd cre crf crh crr daa dab dac dad dae daf dah dar dba dbb dbc dbd dbe dbf dbh dbr dca dcb dcc dcd dce dcf dcr dda ddb ddc ddd dde ddf ddh ddr de- dea deb dec ded dee def deh der dfa dfb dfc dfd dfe dff dfh dfr dh- dha dhb dhc dhd dhe dhf dhh dhr dra drb drc drd dre drr eaa eab eac ead eae eaf eah ear eba ebb ebc ebd ebe ebf ebh ebr ec- eca ecb ecc ecd ece ecf ech ecr ed- eda edb edc edd ede edf edh edr eea eeb eec eed eee eef eer ef- efa efb efc efd efe eff efh efr eha ehb ehc ehd ehe ehf ehh ehr era erb erc erd ere erf erh err faa fab fac fad fae faf fah far fba fbb fbc fbd fbe fbf fbh fbr fca fcb fcc fcd fce fcf fcr fda fdb fdc fdd fde fdf fdh fdr fea feb fec fed fee fef feh fer ffa ffc ffd ffe fff ffh ffr fha fhb fhc fhe fhf fhh fhr fra frb frc frd fre frf frh frr haa hab hac had hae haf hah har hba hbb hbc hbd hbe hbf hbh hbr hca hcb hcc hcd hce hcf hch hcr hda hdb hdc hdd hde hdf hdh hdr he- hea heb hec hed hee hef heh her hfa hfb hfc hfd hfe hff hfh hfr hha hhb hhc hhd hhe hhf hhh hhr hr- hra hrb hrc hrd hre hrf hrh hrr ra- raa rab rac rad rae raf rah rar rba rbb rbc rbd rbe rbf rbh rbr rca rcb rcc rcd rce rcf rch rcr rda rdb rdc rdd rde rdf rdh rdr re- rea reb rec red ree ref reh rer rfa rfb rfc rfd rfe rff rfh rfr rh- rha rhb rhc rhd rhe rhf rhh rhr rra rrb rrc rrd rrf rrh rrr

a-be a-ha aaaa aaab aaac aaad aaae aaaf aaah aaar aaba aabb aabc aabd aabh aaca aacb aacc aacd aace aacf aach aacr aada aadc aade aaea aaec aafa aafb aafc aafd aaff aaha aara aarc aard aare abaa abab abac abad abae abaf abar abb- abba abbb abbe abbr abca abcb abcc abcd abcf abch abcr abda abec abed abee aber abff abha abhr abra abrc acaa acab acac acad acae acar acba acca accc accd acce accf acch acda acdb acdc acde acdf ace- acea acec aced aceh acer acfc acfd acfe acha ache achh achr acr- acra acrc acre acrr adaa adab adac adad adae adah adar adba adbc adcc adda addc addd adde addr adea adeb adee adeh ader adfa adfc adha adhd adra adre aeac aeaf aecb aede aeer aer- aera aerc aerd afaa afad afar afca afcb afcc afch afdb afdc afee afer affa affc afr- afra afrc afre ahab ahac ahad ahah ahar ahed ahfa ahha ahra ahrc ahre ahrr arab arac arad arae araf arah arar arba arbe arbh arc- arca arce arch arda ardc arde ardf area arec ared aree aref areh arfa arfb arfc arff arh- arr- arra arrc arre arrh arrr baaa baad baaf baah baar baba babb babe babr bac- baca bacc bace bach bada badb badd bade badh badr baed baer bafc baff baha bahr bar- bara barb barc bard bare barf barh barr bbad bbbb bbch bbdd bbeb bbfc bbrc bcaa bcar bcbc bcca bccc bcda bcde bcec bcer bcfc bchd bche bcra bd-r bdbc bddc bddh bead beaf beah bear beba bebb bebe beca bech beda bede beeb beed beef beer befa befe beff behr bera berc berd bere berr bfca bhar bhca bhcc bher bhff bhra brab brac brad brae braf brah brca brcb brce brda brea breb brec bred bree bref brer brfc brrr c-cd caaa caab caac caaf caah caba cabe cabf cac- caca cacc cace cach cacr cada cadc cadd cade cadr caec caer cafa cafb cafc cafe caff caha cahe cara carb carc card care carf carr cbac cbar cbbc cbca cbcc cbce cbcr cbdb cbdc cbea cbec cbee cbef cber cbfb cbfc cbha cbrd cbre cbrh ccaa ccab ccac ccad ccaf ccar ccba ccbc ccca cccb cccc cccf ccdc ccdf ccdh ccdr cced ccee ccfa ccfc ccfd ccff ccha cche cchr ccra ccrc ccre ccrf cd-e cd-r cdaa cdac cdad cdba cdbf cdda cddb cddr cdec cdef cder cdfa cdfe cdre ceac cead cear ceba cec- ceca cece ceda cedd cede ceeb ceec cef- cefa cefc cer- cera cerc cerd cere cerf cfaa cfab cfac cfae cfar cfbc cfbr cfca cfcb cfcf cfda cffb cffr cfra cfrb cfre chaa chab chac chad chae chaf chah char chca chce chch chea cheb chec ched chee chef cheh cher chfa chfc chfr chha chra chrb