-er a-a a-b a-c aaa aab aac aae aao aar ab- aba abb abc abe abo abr ac- aca acb acc ace aco acr aea aeb aec aee aeo aer aoa aob aoc aoe aoo aor ar- ara arb arc are aro arr baa bab bac bae bao bar bba bbb bbc bbe bbo bbr bca bcb bcc bce bco bcr be- bea beb bec bee beo ber boa bob boc boe boo bor bra brb bre bro brr c-- caa cab cac cae cao car cba cbb cbc cbe cbo cbr cca ccb ccc cce cco ccr ce- cea ceb cec cee ceo cer co- coa cob coc coe coo cor cra crb crc cre cro crr eaa eab eac eae eao ear eba ebb ebc ebe ebo ebr ec- eca ecb ecc ece eco ecr eea eeb eec eee eeo eer eo- eoa eob eoc eoe eoo eor era erb erc ere ero err oaa oab oac oae oao oar ob- oba obb obc obe obo obr oc- oca ocb occ oco ocr oea oeb oec oee oeo oer oo- ooa oob ooc ooo oor or- ora orb orc ore oro orr ra- raa rab rac rae rao rar rba rbb rbc rbe rbo rbr rca rcb rcc rce rco rcr re- rea reb rec ree reo rer roa rob roc roe roo ror rra rrb rrc rrr

a-be aaaa aaab aaac aaae aaar aaba aabb aabc aaca aacb aacc aace aaco aacr aaea aaec aaoe aaoo aara aarc aare aaro abaa abab abac abae abar abb- abba abbb abbe abbo abbr abca abcb abcc abcr abec abee aber aboa abob aboo abor abra abrc abro acaa acab acac acae acar acba acca accc acce acco ace- acea acec acer acoa acoe acor acr- acra acrc acre acro acrr aeac aecb aeer aer- aera aerc aero aoba aoca aoce aora aorb arab arac arae arar arba arbe arc- arca arce arco area arec aree areo aroa arob aroe aroo aror arr- arra arrc arre arro arrr baaa baar baba babb babe babo babr bac- baca bacc bace baco baer bar- bara barb barc bare baro barr bbbb bbeb bbrc bcaa bcar bcbc bcca bccc bcec bcer bcor bcra bear beba bebb bebe bebo beca beeb beer beo- beor bera berc bere bero berr boab boac boar boba bobb bobe bobo boca boce boco boea boec boee boeo boer boob booc booe boor bor- bora bore boro borr brab brac brae brao brca brcb brce brea breb brec bree breo brer broa brob broc broe broo bror brrr c-bo caaa caab caac caba cabe cabo cac- caca cacc cace caco cacr caec caer caor cara carb carc care caro carr cbac cbar cbbc cbca cbcc cbce cbcr cbea cbec cbee cber cbre ccaa ccab ccac ccar ccba ccbc ccca cccb cccc ccee ccob ccoc ccra ccrc ccre ceac cear ceba cec- ceca cece ceco ceeb ceec ceor cer- cera cerc cere cero coba cobb cobe cobo coca coce coco coob cor- cora corb corc core coro corr crab crac crar crbc crca crcc crce crcr cre- crea creb crec cree creo crob croc croe croo cror eaba eaca eacc eaec eara earb eare earo ebac ebba ebbc ebbo ebbr ebcc eber eboe eboo ebor ebro ecaa ecac ecao ecar ecbc ecbe ecca eccb eccc ecce ecco eco- ecra ecrc ecrr eeca eeea eeee eeoc eera eerc eero eora eore erba erbb erbe erca ercc erce ereb erec erer erob eroc eroe eroo erra errc erre erro o-eo oaer oara oare obba obbo obea obec ober oboe obor obra obre obro ocab ocac ocbc occa occc oce ocee ocra ocre ocro ocrr oec- oeca oecc oeec oera oere ooaa ooba oobe oocr ooer oooo oora oore orab orac orae orao orar orba orbb orbe orbo orca orce orco ore- orea oreb orec oreo orer oro- oroe oror orra orro raab raba rabb rabe rabo rac- raca racc race raco raec raer raob raoc rara rarb rare raro rbbb rbbr rcac rcbc rcbo rccb rccc rea- reac reae reao rear reba rebb rebe rebo reca recc rece recr reeb rera rere rero roab roar rob- roba robb robe robo roca rocc roce roco roea roer roob roor rora rorc rore roro rrrr

-aaa- aaace aaaee aaaoc aaarc aabaa aabba aabra aacbc abaab ababa ababe abaca abaco abaer abara abare abbac abbar abccc abear abeba abebe abece abeer abera abere aberr aboab abobo abora aborc abore abrac abrar acaca acacb acar- acara acare accra aceae acebo acera acerb acero acore acrab acrea acree acro- acrob aeaea aebbe aereo aero- aeroe ar-ab ara-c arab- araba arabe arabo araca arace araco araea arara arare arbab arbar arbee arber arbor arbre arcae arcee arcoa arcor areae arear areca areo- arere arero aroab aroar aroba arobe aroer aroor arora arore arrea arroe baabe babar babec babee baber baboo babra bacab bacao bacar bacca bacco bacea baoro baraa barab barac barao barar barba barbe barca barce barco barea bareo barer baro- baroa baroo baror barra barre barro bbbee bbear be-er be-ro beaco beara beare bebar beber bebra becca becco beeac beebe berar berba berbe berca berea berec berob beroe beror berra berre bo-bo boaco boaro bobac bobar bobea boboc bobr bobre bocac bocao bocar bocca bocce bocoa bocor boece boero booba booce booco booer boora boore borac borba borbo borca borce borea borec boree borer boro- boroa boroo borra borre borro braca bracc brace braco breba brece breer breo- breoc brera brere brobo broca broce broer brora brrar brrrr c-a-c c-cor ca-ca caaba caare caber cabob caboc cabra cabre cacao caco- cacoa caec- caeca caere caoba caraa carab carac carb- carbo carea carer caroa carob caroe carra carre carro ccccc ceace ceara ceare cearr cebec ceber ceco- ceeac ceere ceoce ceoor cerae cerc- cerca cerce cerco cerea cerec cerer cero- ceroc cerre cerro co-bo co-co coarb coarc cobar cobbe cobra cobre cocao cocc- cocce cocco cocea coceo cocoa cooba cooee cooer coore corba corbe corbo corca corce