-er a-a a-b a-c aaa aab aac aad aae aah aao aar aax ab- aba abb abc abd abe abh abo abr abx ac- aca acb acc acd ace ach aco acr acx ad- ada adb adc add ade adh ado adr adx aea aeb aec aed aee aeh aeo aer aex aha ahb ahc ahd ahe ahh aho ahr ahx aoa aob aoc aod aoe aoh aoo aor aox ar- ara arb arc ard are arh aro arr arx ax- axa axe axh axo axr axx baa bab bac bad bae bah bao bar bax bba bbb bbc bbd bbe bbh bbo bbr bbx bca bcb bcc bcd bce bch bco bcr bcx bda bdb bdc bdd bde bdh bdo bdr bdx be- bea beb bec bed bee beh beo ber bex bha bhb bhc bhd bhe bhh bho bhr bhx boa bob boc bod boe boh boo bor box bra brb brd bre brh bro brr brx bxb bxd bxo bxx c-- caa cab cac cad cae cah cao car cax cba cbb cbc cbd cbe cbh cbo cbr cbx cca ccb ccc ccd cce cch cco ccr ccx cda cdb cdc cdd cde cdh cdo cdr cdx ce- cea ceb cec ced cee ceh ceo cer cex ch- cha chb chc chd che chh cho chr chx co- coa cob coc cod coe coh coo cor cox cra crb crc crd cre crh cro crr crx cxc cxh cxo cxr cxx daa dab dac dad dae dah dao dar dax dba dbb dbc dbd dbe dbh dbo dbr dbx dca dcb dcc dcd dce dco dcr dcx dda ddb ddc ddd dde ddh ddo ddr ddx de- dea deb dec ded dee deh deo der dex dh- dha dhb dhc dhd dhe dhh dho dhr doa dob doc dod doe doh doo dor dox dra drb drc drd dre dro drr drx dxc dxd dxo dxr dxx eaa eab eac ead eae eah eao ear eax eba ebb ebc ebd ebe ebh ebo ebr ebx ec- eca ecb ecc ecd ece ech eco ecr ecx ed- eda edb edc edd ede edh edo edr edx eea eeb eec eed eee eeo eer eex 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 ex- exa exc exd exe exh exo exr exx haa hab hac had hae hah hao har hax hba hbb hbc hbd hbe hbh hbo hbr hbx hca hcb hcc hcd hce hch hco hcr hda hdb hdc hdd hde hdh hdo hdr hdx he- hea heb hec hed hee heh heo her hex hha hhb hhc hhd hhe hhh hho hhr hoa hob hoc hod hoe hoh hoo hor hox hr- hra hrb hrc hrd hre hrh hro hrr hxc hxd oaa oab oac oad oae oah oao oar oax ob- oba obb obc obd obe obh obo obr obx oc- oca ocb occ ocd och oco ocr ocx oda odb odc odd ode odh odo odr oea oeb oec oed oee oeh oeo oer oex oha ohc ohd ohe ohh oho ohr oo- ooa oob ooc ood ooh ooo oor oox or- ora orb orc ord ore orh oro orr orx ox- oxa oxb oxc oxo oxx ra- raa rab rac rad rae rah rao rar rax rba rbb rbc rbd rbe rbh rbo rbr rbx rca rcb rcc rcd rce rch rco rcr rcx rda rdb rdc rdd rde rdh rdo rdr rdx re- rea reb rec red ree reh reo rer rex rh- rha rhb rhc rhd rhe rhh rho rhr roa rob roc rod roe roh roo ror rox rra rrb rrc rrd rrh rrr rxr xaa xac xad xar xbc xbe xbr xbx xcb xcd xch xcr xcx xda xdb xdc xde xdh xdr xed xee xer xex xhd xoa xoc xod xoo xor xox xrc xrd xrx xxo xxx

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 abax 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 abox 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 adox adra adre adro aeac aecb aede aeer aer- aera aerc aerd aero ahab ahac ahad ahah ahar ahed ahex ahha ahoa ahod ahoe ahor ahra ahrc ahre ahrr aoah aoba aoca aoce aodh aora aorb arab arac arad arae arah arar arax arba arbe arbh arc- arca arce arch arco arda ardc arde ardo area arec ared aree areh areo arex arh- aroa arob arod aroe aroo aror arr- arra arrc arre arrh arro arrr axar axce axed axer axo- axoa axxo ba-x 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 barx bbad bbbb bbch bbdd bbdo bbeb bbox 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