a-a a-b a-c aaa aab aac aad aag aao aar ab- aba abb abc abd abg abo abr ac- aca acb acc acd acg aco acr ad- ada adb adc add adg ado adr ag- aga agb agc agd agg ago agr aoa aob aoc aod aog aoo aor ar- ara arb arc ard arg aro arr baa bab bac bad bag bao bar bba bbb bbc bbd bbg bbo bbr bca bcb bcc bcd bcg bco bcr bda bdb bdc bdd bdg bdo bdr bga bgb bgc bgd bgg bgo bgr boa bob boc bod bog boo bor bra brb brd brg bro brr c-- caa cab cac cad cag cao car cba cbb cbc cbd cbg cbo cbr cca ccb ccc ccd ccg cco ccr cda cdb cdc cdd cdg cdo cdr cga cgb cgc cgd cgg cgo cgr co- coa cob coc cod cog coo cor cra crb crc crd crg cro crr daa dab dac dad dag dao dar dba dbb dbc dbd dbg dbo dbr dca dcb dcc dcd dcg dco dcr dda ddb ddc ddd ddg ddo ddr dga dgc dgd dgg dgr doa dob doc dod dog doo dor dra drb drc drd drg dro drr g-d gaa gab gac gad gag gao gar gba gbc gbd gbg gbo gbr gca gcb gcc gcd gcg gco gcr gda gdb gdc gdd gdo gdr gga ggb ggc ggd ggg ggo ggr goa gob goc god gog goo gor gra grb grc grd grg gro grr oaa oab oac oad oag oao oar ob- oba obb obc obd obg obo obr oc- oca ocb occ ocd ocg oco ocr oda odb odc odd odg odo odr oga ogc ogd ogg ogo oo- ooa oob ooc ood oog ooo oor or- ora orb orc ord org oro orr ra- raa rab rac rad rag rao rar rba rbb rbc rbd rbg rbo rbr rca rcb rcc rcd rcg rco rcr rda rdb rdc rdd rdg rdo rdr rga rgb rgc rgd rgg rgo rgr roa rob roc rod rog roo ror rra rrb rrc rrd rrg 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 abag abar abb- abba abbb abbo abbr abca abcb abcc abcd abcr abda abdo abgd aboa abob abod aboo abor abra abrc abro acaa acab acac acad acag acar acba acca accc accd acco acda acdb acdc acga acgr acoa acod acog acor acr- acra acrc acro acrr adaa adab adac adad adag adao adar adba adbc adcc adda addc addd addo addr adob adoc adod adog adoo ador adra adro ag-o agac agad agag agao agar agba agbo agca agcc agco agda agga agob agod agog agoo agra agro aoba aoca aora aorb arab arac arad arag arar arba arc- arca arco arda ardc ardo arga argb argo aroa arob arod aroo aror arr- arra arrc arrg arro arrr baaa baad baar baba babb babo babr bac- baca bacc baco bada badb badd bado badr baga bagg bago bar- bara barb barc bard barg baro barr bbad bbbb bbdd bbdo bbga bbrc bbrg bcaa bcar bcbc bcbg bcca bccc bcda bcor bcra bd-r bdbc bddc bdog bgca boab boac boad boag boar boba bobb bobo boca boco boda bodb bodo boga bogd bogg bogo boob booc bood boog boor bor- bora bord borg boro borr brab brac brad brag brao brca brcb brda brdo broa brob broc brod brog broo bror brrr c-bo c-cd caaa caab caac caba cabg cabo cac- caca cacc caco cacr cada cadc cadd cado cadr caga cagg cago cagr caod caor cara carb carc card caro carr cbac cbar cbbc cbca cbcc cbcr cbdb cbdc cbdo cbga cbgb cbrd ccaa ccab ccac ccad ccag ccar ccba ccbc ccca cccb cccc ccdc ccdr ccga ccgc ccob ccoc ccod ccra ccrc ccrg cd-r cdaa cdac cdad cdba cdda cddb cddr cgac cgcc cgcg cgro coad coag coba cobb cobo coca coco coda codd cogo coob cood cor- cora corb corc cord corg coro corr crab crac crag crar crbc crca crcc crcr crda crdc crob croc crod croo cror d-bo daab daad daag daar daba dabb dabo daca dada dado daga dagg dago dagr dara darb darc dard darg daro darr dbag dbar dbcc dcbc dcca dccb dccc dcdb dcgo dcra dddd ddoc ddrc dgac dgca doab doar doba dobb doca doco dod- doda dodd dodg dodo dog- doga dogg dogo doob dood door dora dorc dord doro dorr draa drab drac drad drag drar drba drbc drca drda drob drod drog drra gaar gaba gabb gabo gabr gada gadd gado gaga gagg gago gara garb gard garg garo garr gbag gbbo gc-c gcaa gcbc gccc gcda gcoa gcrg gdca gddb gdor gdrc gggg goad goar goba gobo goca gocr goda godo goga gogo good goog goor gora gorb gord gorg goro gorr grab grac grad grbr grcc grdc grob groc grod grog groo gror grrr oara obad obba obbo obor obra obro ocab ocac ocad ocbc occa occc ocga ocra ocro ocrr odac odbo odda oddd odoo odor odra ogar ogb ogba ogdc ogoa ogod ogog ogra ogro ooaa ooba oocr ooda oooo oora oord orab orac orad orao orar orba orbb orbo orca orco orda ordo orga orgo oro- oror orra orro raab raad raag raba rabb rabo rac- raca racc raco rada radc radd rado radr raga ragg rago raob raoc rara rarb raro rbbb rbbr rcac rcbc rcbo rccb rccc rcdc rcga rcgc rcrd rcrg rdac rdoc rgba roab road roag roar rob- roba robb robo roca rocc roco roda rodd rodo roga rogg rogo roob rood roog roor rora rorc roro rrad rrrr

-aaa- -abad -drag aaadc aaaoc aaarc aaarg aabaa aabba aabga aabra aacbc aadac abaab ababa abaca abaco abada abaga abago abara abbac abbad abbar abbod abccc abcdb abgar aboab aboad abobo abood abora aborc abord abrac abrad abrar abrod acaca