a-a a-b a-c aaa aab aac aad aao aar ab- aba abb abc abd abo abr ac- aca acb acc acd aco acr ad- ada adb adc add ado adr aoa aob aoc aod aoo aor ar- ara arb arc ard aro arr baa bab bac bad bao bar bba bbb bbc bbd bbo bbr bca bcb bcc bcd bco bcr bda bdb bdc bdd bdo bdr boa bob boc bod boo bor bra brb brd bro brr c-- caa cab cac cad cao car cba cbb cbc cbd cbo cbr cca ccb ccc ccd cco ccr cda cdb cdc cdd cdo cdr co- coa cob coc cod coo cor cra crb crc crd cro crr daa dab dac dad dao dar dba dbb dbc dbd dbo dbr dca dcb dcc dcd dco dcr dda ddb ddc ddd ddo ddr doa dob doc dod doo dor dra drb drc drd dro drr oaa oab oac oad oao oar ob- oba obb obc obd obo obr oc- oca ocb occ ocd oco ocr oda odb odc odd odo odr oo- ooa oob ooc ood ooo oor or- ora orb orc ord oro orr ra- raa rab rac rad rao rar rba rbb rbc rbd rbo rbr rca rcb rcc rcd rco rcr rda rdb rdc rdd rdo rdr roa rob roc rod roo ror rra rrb rrc rrd rrr

a-do aaaa aaab aaac aaad aaar aaba aabb aabc aabd aaca aacb aacc aacd aaco aacr aada aadc aaoo aara aarc aard aaro abaa abab abac abad abar abb- abba abbb abbo abbr abca abcb abcc abcd abcr abda abdo aboa abob abod aboo abor abra abrc abro acaa acab acac acad acar acba acca accc accd acco acda acdb acdc acoa acod acor acr- acra acrc acro acrr adaa adab adac adad adao adar adba adbc adcc adda addc addd addo addr adob adoc adod adoo ador adra adro 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 baaa baad baar baba babb babo babr bac- baca bacc baco bada badb badd bado badr bar- bara barb barc bard baro barr bbad bbbb bbdd bbdo bbrc bcaa bcar bcbc bcca bccc bcda bcor bcra bd-r bdbc bddc boab boac boad boar boba bobb bobo boca boco boda bodb bodo boob booc bood boor bor- bora bord boro borr brab brac brad brao 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 cbac cbar cbbc cbca cbcc cbcr cbdb cbdc cbdo cbrd ccaa ccab ccac ccad ccar ccba ccbc ccca cccb cccc ccdc ccdr ccob ccoc ccod ccra ccrc cd-r cdaa cdac cdad cdba cdda cddb cddr coad coba cobb cobo coca coco coda codd coob cood cor- cora corb corc cord coro corr crab crac crar crbc crca crcc crcr crda crdc crob croc crod croo cror d-bo daab daad daar daba dabb dabo daca dada dado dara darb darc dard daro darr dbar dbcc dcbc dcca dccb dccc dcdb dcra 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 oara obad obba obbo obor obra obro ocab ocac ocad ocbc occa occc ocra ocro ocrr odac odbo odda oddd odoo odor odra ooaa ooba oocr ooda oooo oora oord orab orac orad orao orar orba orbb orbo orca orco orda ordo oro- oror orra orro raab raad raba rabb rabo rac- raca racc raco rada radc radd rado radr raob raoc rara rarb raro rbbb rbbr rcac rcbc rcbo rccb rccc rcdc rcrd rdac rdoc roab road roar rob- roba robb robo roca rocc roco roda rodd rodo roob rood roor rora rorc roro rrad rrrr

-aaa- -abad aaadc aaaoc aaarc aabaa aabba aabra aacbc aadac abaab ababa abaca abaco abada abara abbac abbad abbar abbod abccc abcdb aboab aboad abobo abood abora aborc abord abrac abrad abrar abrod acaca acacb acar- acara acard accad accra accrd acoda acord acrab acro- acrob adaba adada adado adara adaro addra adoar adobo adodb adoor adora adoro adrad adrar adroa ar-ab ara-c arab- araba arabo araca araco arada arado arara arbab arbar arbor arcoa arcor ardab ardod ardor ardra aroab aroad aroar aroba aroor arora baard babar babdo baboo babra bacab bacao bacar bacca bacco badao badar badco baddo badoc badod badoo badra baoro baraa barab barac barad barao barar barba barca barco barda bardo baro- baroa baroo baror barra barro bdoor bo-bo boaco boada board boaro bobac bobar boboc bobr bocac bocao bocar bocca bocoa bocor bodd- bodoc bodor booba booco boora boord borac borba borbo borca borda bordo boro- boroa borod boroo borra borro braca bracc braco brada brard brdda broad brobo broca broda brodd brodo brood brora brrar brrrr c-a-c c-cor ca-ca caaba cabob caboc cabod cabra cacao caco- cacoa cadac cadar caddo caddr cadoc cador cadra cadro caoba caraa carab carac carad carb- carbo carda cardo caroa carob carra carro ccccc co-bo co-co coadd coarb coarc coard cobar cobra cocao cocc- cocco cocoa codco codo cooba coord corba corbo corca corda coro- corod corra craba crabb craco crada cradd croad croco crodo crood d-a-d d-rad d-rod daada daara dabar dabba dabco dabra dacca dacco daco- dacor dadao dadar dadda daddo dadoo dadra daraa darab darba darco darda dardo darod daroo darra darro dccab ddddd do-do doaba doado dobra dobro dodab dodad dodoo dodro dooab dooar doodo doora dorab dorad dorra draba draca draco drbob drobo drood o-r-b oarac oaror obaba obara obodo obora oboro obrab obrad ocado ocara ocaro occar occra ocora ocr-a ocr-b ocrad odaba odara oddba ooooo oraba orara orbad orcad ordoc ordro orobo oroco orodo orrca r-co- ra-ra raaba raaor raard rabab rabac rabad rabba rabda rabor radar rccar