a-a a-b a-c aaa aab aac aad aae aak aao aav ab- aba abb abc abd abe abk abo abv ac- aca acb acc acd ace ack aco acv ad- ada adb adc add ade adk ado adv aea aeb aec aed aee aek aeo aev aka akb akc akd ake akk ako akv aoa aob aoc aod aoe aok aoo aov av- ava avb avc avd ave avk avo baa bab bac bad bae bak bao bav bba bbb bbc bbd bbe bbk bbo bca bcb bcc bcd bce bck bco bcv bda bdb bdc bdd bde bdk bdo bdv be- bea beb bec bed bee bek beo bev bka bkb bkc bke bkk bko bkv boa bob boc bod boe bok boo bov bva bvb bvc bvd bve bvk bvo bvv c-- caa cab cac cad cae cak cao cav cba cbb cbc cbd cbe cbk cbo cbv cca ccb ccc ccd cce cck cco ccv cda cdb cdc cdd cde cdk cdo cdv ce- cea ceb cec ced cee cek ceo cev cka ckb ckc ckd cko co- coa cob coc cod coe cok coo cov cva cvb cvc cvd cve cvk cvo cvv daa dab dac dad dae dak dao dav dba dbb dbc dbd dbe dbk dbo dbv dca dcb dcc dcd dce dck dco dcv dda ddb ddc ddd dde ddk ddo de- dea deb dec ded dee dek deo dev dka dkb dkc dke dkk dko doa dob doc dod doe dok doo dov dva dvb dvc dvd dve dvk eaa eab eac ead eae eak eao eav eba ebb ebc ebd ebe ebk ebo ebv ec- eca ecb ecc ecd ece eck eco ecv ed- eda edb edc edd ede edk edo eea eeb eec eed eee eek eeo eev eka ekb ekc ekd eke eko ekv eo- eoa eob eoc eod eoe eok eoo eva evb evc evd eve evo evv ka- kaa kab kac kad kae kak kao kav kba kbb kbc kbd kbe kbk kbo kca kcb kcc kcd kce kck kda kdb kdc kde kdk kdo ke- kea keb kec ked kee kek keo kev kkb kkc kke kkk kkv koa kob koc kod koe kok koo kva kvb kvk kvo kvv oaa oab oac oad oae oak oao oav ob- oba obb obc obd obe obk obo obv oc- oca ocb occ ocd ock oco ocv oda odb odc odd ode odo odv oea oeb oec oed oee oeo oka okb okc okd oke okk oko oo- ooa oob ooc ood ook ooo oov ov- ova ovb ovc ovd ove ovo ovv v-a v-e vaa vab vac vad vae vak vao vav vba vbc vbd vbk vbo vbv vca vcc vcd vce vco vdb vdc vdd vde vdk vdo vdv vea veb vec ved vee vek veo vka vkb voa vob voc vod voe vok voo vov vva vvb vvc vvo vvv

-vac a-ak a-be a-do a-ok aaaa aaab aaac aaad aaae aaav aaba aabb aabc aabd aaca aacb aacc aacd aace aack aaco aacv aada aadc aade aaea aaec aaev aaka aake aaoe aaoo aava abaa abab abac abad abae abak abb- abba abbb abbe abbo abca abcb abcc abcd abda abdo abec abed abee aboa abob abod abok aboo abov abva abvd acaa acab acac acad acae acba acca accc accd acce acco acda acdb acdc acde ace- acea acec aced acek acev ackd acke acoa acod acoe acvv adaa adab adac adad adae adak adao adba adbc adcc adda addc addd adde addo adea adeb adee adeo adob adoc adod adoe adok adoo advb aeac aecb aede aeka aeva akaa akae akao akca aked akee akka akko akok aoba aoca aoce avab avao avcc avce avco avda avea avec aveo avva avvo baaa baad baak baba babb babe babo bac- baca bacc bace back baco bada badb badd bade bado baed baek bak- baka bake bako bava bave bbad bbbb bbdd bbdo bbeb bcaa bcbc bcca bccc bcda bcde bcec bcvo bdav bdbc bddc bead beak beav beba bebb bebe bebo beca beck beda bede bedo beeb beed beek beka beke beko beo- beod beok bevo boab boac boad boak boba bobb bobe bobo boca boce bock boco boda bodb bode bodo boea boec boee boeo boka boke boko boob booc bood booe book bova bove bovo c-bo c-cd caaa caab caac caba cabe cabo cac- caca cacc cace cack caco cada cadc cadd cade cado caec caka cake caod cava cave cavo cbac cbbc cbca cbcc cbce cbdb cbdc cbdo cbea cbec cbee cbka cbko cbva cbvb cbve ccaa ccab ccac ccad ccba ccbc ccca cccb cccc cccv ccdc cced ccee ccob ccoc ccod ccvo cd-e cdaa cdac cdad cdba cdda cddb cdec cdvd ceac cead ceba cec- ceca cece ceco ceda cedd cede cedo ceeb ceec ceke ceva cevo ckac ckbc ckbe ckck ckco ckcv ckdo ckoa ckob ckoc ckoo ckvo coad coak coba cobb cobe cobo coca coce cock coco coda codd code coed cok- coka coke coko coob cood cook cova cove covo cvac cvca cvcc d-bo daab daad daae daba dabb dabo daca dace dada dade dado daeb daka dake dako dava dave dbcc dcbc dcca dccb dccc dccv dcdb dcvd dddd ddoc deac dead deae deak deba debe dec- deca decc decd dece deck deco deda dedd dede dedo deeb deed deek deev dek- deka deke deva deve devo dkba dkdc doab doae doak doba dobb dobe doca doce dock doco dod- doda dodd dode dodo doea doek doka doke doko doob dood dook dove dvda dvoa eaba eaca eacc eada eadb eadd eaec eave ebac ebba ebbc ebbo ebcc ebed eboe eboo ecaa ecac ecad ecao ecbc ecbe ecca eccb eccc ecce ecco ecdc eced ecka ecko eco- ecod edac edad edca edda eddc edde eddo ede- edea edoc edod edve eeca eede eeea eeee eeka eeke eeoc eeva eka- ekab ekco ekeb eked ekek ekka ekoa eocd eode eoka evac evae evdb evea evoe evoo evvk