-er a-a a-b a-c aaa aab aac aae aah aaj aao aar ab- aba abb abc abe abh abj abo abr ac- aca acb acc ace ach acj aco acr aea aeb aec aee aeh aej aeo aer aha ahb ahc ahe ahh ahj aho ahr aja ajb ajc aje ajh ajj ajo ajr aoa aob aoc aoe aoh aoj aoo aor ar- ara arb arc are arh arj aro arr baa bab bac bae bah baj bao bar bba bbb bbc bbe bbh bbo bbr bca bcb bcc bce bch bcj bco bcr be- bea beb bec bee beh beo ber bha bhb bhc bhe bhh bhj bho bhr bja bjc bjj bjr boa bob boc boe boh boj boo bor bra brb bre brh brj bro brr c-- c-j caa cab cac cae cah caj cao car cba cbb cbc cbe cbh cbj cbo cbr cca ccb ccc cce cch ccj cco ccr ce- cea ceb cec cee ceh cej ceo cer ch- cha chb chc che chh cho chr cja cjb cjc cjr co- coa cob coc coe coh coj coo cor cra crb crc cre crh crj cro crr eaa eab eac eae eah eaj eao ear eba ebb ebc ebe ebh ebj ebo ebr ec- eca ecb ecc ece ech ecj eco ecr eea eeb eec eee eeo eer eha ehb ehc ehe ehh eho ehr eja ejc ejo eo- eoa eob eoc eoe eoh eoo eor era erb erc ere erh ero err haa hab hac hae hah haj hao har hba hbb hbc hbe hbh hbj hbo hbr hca hcb hcc hce hch hcj hco hcr he- hea heb hec hee heh hej heo her hha hhb hhc hhe hhh hhj hho hhr hja hjo hjr hoa hob hoc hoe hoh hoo hor hr- hra hrb hrc hre hrh hrj hro hrr jaa jab jac jae jah jaj jao jar jba jbc jbj jbo jbr jca jcb jcc jce jch jco jcr jea jeb jec jee jeh jej jeo jer jha jhc jhe jhj jho jhr jja jjb jjc jjj jjr joa job joc joe joh joj joo jor jra jrb jrc jro jrr oaa oab oac oae oah oaj oao oar ob- oba obb obc obe obh obj obo obr oc- oca ocb occ och ocj oco ocr oea oeb oec oee oeh oeo oer oha ohc ohe ohh oho ohr oja ojb ojc oje ojo oo- ooa oob ooc ooh ooo oor or- ora orb orc ore orh oro orr ra- raa rab rac rae rah raj rao rar rba rbb rbc rbe rbh rbo rbr rca rcb rcc rce rch rcj rco rcr re- rea reb rec ree reh reo rer rh- rha rhb rhc rhe rhh rho rhr rja rjc rjr roa rob roc roe roh roj roo ror rra rrb rrc rrh rrr

a-be a-ha aaaa aaab aaac aaae aaah aaar aaba aabb aabc aabh aaca aacb aacc aace aach aaco aacr aaea aaec aaha aaoe aaoo aara aarc aare aaro abaa abab abac abae abaj abar abb- abba abbb abbe abbo abbr abca abcb abcc abch abcr abec abee aber abha abho abhr aboa abob aboh aboo abor abra abrc abro acaa acab acac acae acar acba acca accc acce acch acco ace- acea acec aceh acer acha ache achh acho achr acoa acoe acoh acor acr- acra acrc acre acro acrr aeac aecb aeer aer- aera aerc aero ahab ahac ahah ahar ahha ahja ahoa ahoe ahor ahra ahrc ahre ahrr ajab ajac ajah ajao ajar ajba ajee ajob ajoo aoah aoba aoca aoce aora aorb arab arac arae arah arar arba arbe arbh arc- arca arce arch arco area arec aree areh areo arh- arja arje arjo aroa arob aroe aroo aror arr- arra arrc arre arrh arro arrr baaa baah baar baba babb babe babo babr bac- baca bacc bace bach baco baer baha baho bahr baja baoh bar- bara barb barc bare barh baro barr bbbb bbch bbeb bbrc bcaa bcar bcbc bcca bccc bcec bcer bche bcor bcra beah bear beba bebb bebe bebo beca bech beeb beej beer behr beja beo- beor bera berc bere bero berr bhao bhar bhca bhcc bher bhor bhra bjcc bjec bjoa boab boac boar boba bobb bobe bobo boca boce boch boco boea boec boee boeo boer boha boho bohr bojo boob booc booe booh boor bor- bora bore borh borj boro borr brab brac brae brah braj brao brca brcb brce brea breb brec bree breo brer brje broa brob broc broe broh broo bror brrr c-bo caaa caab caac caah caba cabe cabo cac- caca cacc cace cach caco cacr caec caer caha cahe caja caor cara carb carc care carj caro carr cbac cbar cbbc cbca cbcc cbce cbcr cbea cbec cbee cber cbha cbre cbrh cbrj ccaa ccab ccac ccar ccba ccbc ccca cccb cccc ccee ccha cche cchr ccjo ccob ccoc ccra ccrc ccre ceac cear ceba cec- ceca cece ceco ceeb ceec ceja cejc ceor cer- cera cerc cere cero chaa chab chac chae chah chaj chao char chca chce chch chea cheb chec chee cheh cher chha choc choh choo chor chra chrb chrc chro chrr cjar cjbc cjca cjcb cjch cjcj cjob cjor cjrb cjrc cjrj coba cobb cobe cobh cobo coca coce coch coco coha coho cojo coob cooh cor- cora corb corc core coro corr crab crac craj crar crbc crca crcc crce crcr cre- crea creb crec cree creh creo crob croc croe croh croo cror eaba eabh eaca eacc each eaec eara earb eare earh earo ebac ebba ebbc ebbo ebbr ebcc eber eboe eboo ebor ebro ecaa ecac ecao ecar ecbc ecbe ecca eccb eccc ecce ecco echa eche echo eco- ecra ecrc ecrr eeca eeea eeee eeoc eera eerc eero ehaa ehcc ehea eheh eher ehre ejer ejob ejoo eora eore erba erbb erbe erca ercc erce erch ereb erec erer erhc erja erob eroc eroe eroo erra errc erre erro