a-a a-b a-c aaa aab aac aad aao aar aav ab- aba abb abc abd abo abr abv ac- aca acb acc acd aco acr acv ad- ada adb adc add ado adr adv aoa aob aoc aod aoo aor aov ar- ara arb arc ard aro arr arv av- ava avb avc avd avo avr baa bab bac bad bao bar bav bba bbb bbc bbd bbo bbr bca bcb bcc bcd bco bcr bcv bda bdb bdc bdd bdo bdr bdv boa bob boc bod boo bor bov bra brb brd bro brr brv bva bvb bvc bvd bvo bvr bvv c-- caa cab cac cad cao car cav cba cbb cbc cbd cbo cbr cbv cca ccb ccc ccd cco ccr ccv cda cdb cdc cdd cdo cdr cdv co- coa cob coc cod coo cor cov cra crb crc crd cro crr crv cva cvb cvc cvd cvo cvr cvv daa dab dac dad dao dar dav dba dbb dbc dbd dbo dbr dbv dca dcb dcc dcd dco dcr dcv dda ddb ddc ddd ddo ddr doa dob doc dod doo dor dov dra drb drc drd dro drr drv dva dvb dvc dvd dvr oaa oab oac oad oao oar oav ob- oba obb obc obd obo obr obv oc- oca ocb occ ocd oco ocr ocv oda odb odc odd odo odr odv oo- ooa oob ooc ood ooo oor oov or- ora orb orc ord oro orr orv ov- ova ovb ovc ovd ovo ovv ra- raa rab rac rad rao rar rav rba rbb rbc rbd rbo rbr rca rcb rcc rcd rco rcr rcv rda rdb rdc rdd rdo rdr rdv roa rob roc rod roo ror rov rra rrb rrc rrd rrr rva rvb rvc rvd rvo rvr rvv v-a vaa vab vac vad vao var vav vba vbc vbd vbo vbr vbv vca vcc vcd vco vcr vdb vdc vdd vdo vdr vdv voa vob voc vod voo vor vov vra vrb vrc vrd vrr vva vvb vvc vvo vvr vvv

-vac a-do aaaa aaab aaac aaad aaar aaav aaba aabb aabc aabd aaca aacb aacc aacd aaco aacr aacv aada aadc aaoo aara aarc aard aaro aava abaa abab abac abad abar abb- abba abbb abbo abbr abca abcb abcc abcd abcr abda abdo aboa abob abod aboo abor abov abra abrc abro abva abvd acaa acab acac acad acar acba acca accc accd acco acda acdb acdc acoa acod acor acr- acra acrc acro acrr acrv acvv adaa adab adac adad adao adar adba adbc adcc adda addc addd addo addr adob adoc adod adoo ador adra adro advb aoba aoca aora aorb arab arac arad arar arba arc- arca arco arda ardc ardo aroa arob arod aroo aror arr- arra arrc arro arrr arva arvo avab avao avar avcc avco avda avor avra avro avva avvo baaa baad baar baba babb babo babr bac- baca bacc baco bada badb badd bado badr bar- bara barb barc bard baro barr bava bbad bbbb bbdd bbdo bbrc bcaa bcar bcbc bcca bccc bcda bcor bcra bcvo bd-r bdav bdbc bddc boab boac boad boar boba bobb bobo boca boco boda bodb bodo boob booc bood boor bor- bora bord boro borr bova bovo brab brac brad brao brav brca brcb brda brdo broa brob broc brod broo bror brrr c-bo c-cd caaa caab caac caba cabo cac- caca cacc caco cacr cada cadc cadd cado cadr caod caor cara carb carc card caro carr cava cavo cbac cbar cbbc cbca cbcc cbcr cbdb cbdc cbdo cbrd cbva cbvb cbvr ccaa ccab ccac ccad ccar ccba ccbc ccca cccb cccc cccv ccdc ccdr ccob ccoc ccod ccra ccrc ccvo cd-r cdaa cdac cdad cdba cdda cddb cddr cdvd coad coba cobb cobo coca coco coda codd coob cood cor- cora corb corc cord coro corr cova covo crab crac crar crbc crca crcc crcr crda crdc crob croc crod croo cror cvac cvar cvca cvcc cvra cvrd cvrr d-bo daab daad daar daba dabb dabo daca dada dado dara darb darc dard daro darr dava dbar dbcc dcbc dcca dccb dccc dccv dcdb dcra dcvd dddd ddoc ddrc doab doar doba dobb doca doco dod- doda dodd dodo doob dood door dora dorc dord doro dorr draa drab drac drad drar drba drbc drca drda drob drod drra dvar dvda dvdr dvoa dvor dvra oara obad obba obbo obor obra obro ocab ocac ocad ocbc occa occc ocra ocro ocrr odac odbo odda oddd odoo odor odra odva ooaa ooba oocr ooda oooo oora oord orab orac orad orao orar orav orba orbb orbo orca orco orda ordo oro- oror orra orro orvr ovar ovda ovo- ovod ovoo ovra raab raad raba rabb rabo rac- raca racc raco racv rada radc radd rado radr raob raoc rara rarb raro rava rbbb rbbr rcac rcbc rcbo rccb rccc rcdc rcrd rcvr rdac rdoc roab road roar rob- roba robb robo roca rocc roco roda rodd rodo roob rood roor rora rorc roro rova rovo rrad rrrr rv-c rvca vaad vaar vaca vaco vada vado vara vard varr vava vbcc vdcc voad voar voca voda vodo vooc voor vor- vora vord voro vrac vrav vrba vroc vvob vvvv

-aaa- -abad aaadc aaaoc aaarc aabaa aabba aabra aacbc aadac abaab ababa abaca abaco abada abara abava abbac abbad abbar abbod abccc abcdb aboab aboad abobo abood abora aborc abord abovo abrac abrad abrar abrod acaca acacb acar- acara acard accad accra accrd acoda acord acrab acro- acrob adaba adada adado adara adaro adava addra adoar adobo adodb adoor adora adoro adrad adrar adroa ar-ab ara-c arab- araba arabo araca araco arada arado arara arava arbab arbar arbor arcoa arcor ardab ardod ardor ardra aroab aroad aroar aroba aroor arora arvad arvar avara avard avaro avoca avoda avord baard baava babar babdo baboo babra bacab bacao bacar bacca bacco badao badar badco baddo badoc badod badoo badra baoro baraa barab barac barad