-er a-a a-b a-c aaa aab aac aad aae aah aao aar ab- aba abb abc abd abe abh abo abr ac- aca acb acc acd ace ach aco acr ad- ada adb adc add ade adh ado adr aea aeb aec aed aee aeh aeo aer aha ahb ahc ahd ahe ahh aho ahr aoa aob aoc aod aoe aoh aoo aor ar- ara arb arc ard are arh aro arr baa bab bac bad bae bah bao bar bba bbb bbc bbd bbe bbh bbo bbr bca bcb bcc bcd bce bch bco bcr bda bdb bdc bdd bde bdh bdo bdr be- bea beb bec bed bee beh beo ber bha bhb bhc bhd bhe bhh bho bhr boa bob boc bod boe boh boo bor bra brb brd bre brh bro brr c-- caa cab cac cad cae cah cao car cba cbb cbc cbd cbe cbh cbo cbr cca ccb ccc ccd cce cch cco ccr cda cdb cdc cdd cde cdh cdo cdr ce- cea ceb cec ced cee ceh ceo cer ch- cha chb chc chd che chh cho chr co- coa cob coc cod coe coh coo cor cra crb crc crd cre crh cro crr daa dab dac dad dae dah dao dar dba dbb dbc dbd dbe dbh dbo dbr dca dcb dcc dcd dce dco dcr dda ddb ddc ddd dde ddh ddo ddr de- dea deb dec ded dee deh deo der dh- dha dhb dhc dhd dhe dhh dho dhr doa dob doc dod doe doh doo dor dra drb drc drd dre dro drr eaa eab eac ead eae eah eao ear eba ebb ebc ebd ebe ebh ebo ebr ec- eca ecb ecc ecd ece ech eco ecr ed- eda edb edc edd ede edh edo edr eea eeb eec eed eee eeo eer eha ehb ehc ehd ehe ehh eho ehr eo- eoa eob eoc eod eoe eoh eoo eor era erb erc erd ere erh ero err haa hab hac had hae hah hao har hba hbb hbc hbd hbe hbh hbo hbr hca hcb hcc hcd hce hch hco hcr hda hdb hdc hdd hde hdh hdo hdr he- hea heb hec hed hee heh heo her hha hhb hhc hhd hhe hhh hho hhr hoa hob hoc hod hoe hoh hoo hor hr- hra hrb hrc hrd hre hrh hro hrr oaa oab oac oad oae oah oao oar ob- oba obb obc obd obe obh obo obr oc- oca ocb occ ocd och oco ocr oda odb odc odd ode odh odo odr oea oeb oec oed oee oeh oeo oer oha ohc ohd ohe ohh oho ohr oo- ooa oob ooc ood ooh ooo oor or- ora orb orc ord ore orh oro orr ra- raa rab rac rad rae rah rao rar rba rbb rbc rbd rbe rbh rbo rbr rca rcb rcc rcd rce rch rco rcr rda rdb rdc rdd rde rdh rdo rdr re- rea reb rec red ree reh reo rer rh- rha rhb rhc rhd rhe rhh rho rhr roa rob roc rod roe roh roo ror rra rrb rrc rrd rrh rrr

a-be a-do a-ha aaaa aaab aaac aaad aaae aaah aaar aaba aabb aabc aabd aabh aaca aacb aacc aacd aace aach aaco aacr aada aadc aade aaea aaec aaha aaoe aaoo aara aarc aard aare aaro abaa abab abac abad abae abar abb- abba abbb abbe abbo abbr abca abcb abcc abcd abch abcr abda abdo abec abed abee aber abha abho abhr aboa abob abod aboh aboo abor abra abrc abro acaa acab acac acad acae acar acba acca accc accd acce acch acco acda acdb acdc acde ace- acea acec aced aceh acer acha ache achh acho achr acoa acod acoe acoh acor acr- acra acrc acre acro acrr adaa adab adac adad adae adah adao adar adba adbc adcc adda addc addd adde addo addr adea adeb adee adeh adeo ader adha adhd adho adob adoc adod adoe adoo ador adra adre adro aeac aecb aede aeer aer- aera aerc aerd aero ahab ahac ahad ahah ahar ahed ahha ahoa ahod ahoe ahor ahra ahrc ahre ahrr aoah aoba aoca aoce aodh aora aorb arab arac arad arae arah arar arba arbe arbh arc- arca arce arch arco arda ardc arde ardo area arec ared aree areh areo arh- aroa arob arod aroe aroo aror arr- arra arrc arre arrh arro arrr baaa baad baah baar baba babb babe babo babr bac- baca bacc bace bach baco bada badb badd bade badh bado badr baed baer baha baho bahr baoh bar- bara barb barc bard bare barh baro barr bbad bbbb bbch bbdd bbdo bbeb bbrc bcaa bcar bcbc bcca bccc bcda bcde bcec bcer bchd bche bcor bcra bd-r bdbc bddc bddh bead beah bear beba bebb bebe bebo beca bech beda bede bedo beeb beed beer behr beo- beod beor bera berc berd bere bero berr bhao bhar bhca bhcc bher bhor bhra boab boac boad boar boba bobb bobe bobo boca boce boch boco boda bodb bode bodh bodo boea boec boee boeo boer boha bohd boho bohr boob booc bood booe booh boor bor- bora bord bore borh boro borr brab brac brad brae brah brao brca brcb brce brda brdo brea breb brec bred bree breo brer broa brob broc brod broe broh broo bror brrr c-bo c-cd caaa caab caac caah caba cabe cabo cac- caca cacc cace cach caco cacr cada cadc cadd cade cado cadr caec caer caha cahe caod caor cara carb carc card care caro carr cbac cbar cbbc cbca cbcc cbce cbcr cbdb cbdc cbdo cbea cbec cbee cber cbha cbrd cbre cbrh ccaa ccab ccac ccad ccar ccba ccbc ccca cccb cccc ccdc ccdh ccdr cced ccee ccha cche cchr ccob ccoc ccod ccra ccrc ccre cd-e cd-r cdaa cdac cdad cdba cdda cddb cddr cdec cder cdre ceac cead cear ceba cec- ceca cece