-er a-a a-b a-c aaa aab aac aae aaj aao aar aav ab- aba abb abc abe abj abo abr abv ac- aca acb acc ace acj aco acr acv aea aeb aec aee aej aeo aer aev aja ajb ajc aje ajj ajo ajr aoa aob aoc aoe aoj aoo aor aov ar- ara arb arc are arj aro arr arv av- ava avb avc ave avo avr baa bab bac bae baj bao bar bav bba bbb bbc bbe bbo bbr bca bcb bcc bce bcj bco bcr bcv be- bea beb bec bee beo ber bev bja bjc bjj bjr boa bob boc boe boj boo bor bov bra brb bre brj bro brr brv bva bvb bvc bve bvo bvr bvv c-- c-j caa cab cac cae caj cao car cav cba cbb cbc cbe cbj cbo cbr cbv cca ccb ccc cce ccj cco ccr ccv ce- cea ceb cec cee cej ceo cer cev cja cjb cjc cjr co- coa cob coc coe coj coo cor cov cra crb crc cre crj cro crr crv cva cvb cvc cve cvo cvr cvv eaa eab eac eae eaj eao ear eav eba ebb ebc ebe ebj ebo ebr ebv ec- eca ecb ecc ece ecj eco ecr ecv eea eeb eec eee eeo eer eev eja ejc ejo eo- eoa eob eoc eoe eoo eor era erb erc ere ero err erv eva evb evc eve evo evr evv jaa jab jac jae jaj jao jar jav jba jbc jbj jbo jbr jca jcb jcc jce jco jcr jea jeb jec jee jej jeo jer jja jjb jjc jjj jjr joa job joc joe joj joo jor jra jrb jrc jro jrr jvb jvc oaa oab oac oae oaj oao oar oav ob- oba obb obc obe obj obo obr obv oc- oca ocb occ ocj oco ocr ocv oea oeb oec oee oeo oer oja ojb ojc oje ojo oo- ooa oob ooc ooo oor oov or- ora orb orc ore oro orr orv ov- ova ovb ovc ove ovo ovv ra- raa rab rac rae raj rao rar rav rba rbb rbc rbe rbo rbr rca rcb rcc rce rcj rco rcr rcv re- rea reb rec ree reo rer rev rja rjc rjr roa rob roc roe roj roo ror rov rra rrb rrc rrr rva rvb rvc rve rvo rvr rvv v-a v-e vaa vab vac vae vaj vao var vav vba vbc vbo vbr vbv vca vcc vce vco vcr vea veb vec vee veo ver vja voa vob voc voe voo vor vov vra vrb vrc vre vrr vva vvb vvc vvo vvr vvv

-vac a-be aaaa aaab aaac aaae aaar aaav aaba aabb aabc aaca aacb aacc aace aaco aacr aacv aaea aaec aaev aaoe aaoo aara aarc aare aaro aava abaa abab abac abae abaj abar abb- abba abbb abbe abbo abbr abca abcb abcc abcr abec abee aber aboa abob aboo abor abov abra abrc abro abva acaa acab acac acae acar acba acca accc acce acco ace- acea acec acer acev acoa acoe acor acr- acra acrc acre acro acrr acrv acvv aeac aecb aeer aer- aera aerc aero aeva ajab ajac ajao ajar ajba ajee ajob ajoo aoba aoca aoce aora aorb arab arac arae arar arba arbe arc- arca arce arco area arec aree areo arev arja arje arjo aroa arob aroe aroo aror arr- arra arrc arre arro arrr arva arve arvo avab avaj avao avar avcc avce avco avea avec aveo aver avor avra avre avro avva avvo baaa baar baba babb babe babo babr bac- baca bacc bace baco baer baja bar- bara barb barc bare baro barr bava bave bbbb bbeb bbrc bcaa bcar bcbc bcca bccc bcec bcer bcor bcra bcvo bear beav beba bebb bebe bebo beca beeb beej beer beja beo- beor bera berc bere bero berr bevo bjcc bjec bjoa boab boac boar boba bobb bobe bobo boca boce boco boea boec boee boeo boer bojo boob booc booe boor bor- bora bore borj boro borr bova bove bovo brab brac brae braj brao brav brca brcb brce brea breb brec bree breo brer brev brje broa brob broc broe broo bror brrr c-bo caaa caab caac caba cabe cabo cac- caca cacc cace caco cacr caec caer caja caor cara carb carc care carj caro carr cava cave cavo cbac cbar cbbc cbca cbcc cbce cbcr cbea cbec cbee cber cbre cbrj cbva cbvb cbve cbvr ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccv ccee ccjo ccob ccoc ccra ccrc ccre ccvo ceac cear ceba cec- ceca cece ceco ceeb ceec ceja cejc ceor cer- cera cerc cere cero ceva cevo cjar cjbc cjca cjcb cjcj cjob cjor cjrb cjrc cjrj cjvb coba cobb cobe cobo coca coce coco cojo coob cor- cora corb corc core coro corr cova cove covo crab crac craj crar crbc crca crcc crce crcr cre- crea creb crec cree creo crob croc croe croo cror cvac cvar cvca cvcc cver cvra cvrr eaba eaca eacc eaec eara earb eare earo eave 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 ecrv eeca eeea eeee eeoc eera eerc eero eeva ejer ejob ejoo eora eore erba erbb erbe erca ercc erce ereb erec erer erev erja erob eroc eroe eroo erra errc erre erro erve evac evae evar evea ever evje evoe evoo evra evre j-ro jaar jaba jabo jabr jaca jacc jace jaco jaer jaja jara jarc jare jaro jarr java jave jbaa jbar jbob jcbc jccc jcrc jear jebb jebe jeer jera jere jero jjar jjcc joab joao joar joba jobe jobo joca joce joco joea joee jojo joor jora jore joro jova jove jovo jrbr o-eo oaer oara oare obba obbo obea obec ober obja oboe obor obra obre obro ocab ocac ocbc occa occc oce ocee