a-a a-b a-c aaa aab aac aad aag aao aap aar ab- aba abb abc abd abg abo abp abr ac- aca acb acc acd acg aco acp acr ad- ada adb adc add adg ado adp adr ag- aga agb agc agd agg ago agp agr aoa aob aoc aod aog aoo aop aor ap- apa apb apc apd apg apo app apr ar- ara arb arc ard arg aro arp arr b-p baa bab bac bad bag bao bap bar bba bbb bbc bbd bbg bbo bbp bbr bca bcb bcc bcd bcg bco bcp bcr bda bdb bdc bdd bdg bdo bdp bdr bga bgb bgc bgd bgg bgo bgp bgr boa bob boc bod bog boo bop bor bpa bpb bpc bpd bpg bpo bpp bpr bra brb brd brg bro brp brr c-- caa cab cac cad cag cao cap car cba cbb cbc cbd cbg cbo cbp cbr cca ccb ccc ccd ccg cco ccp ccr cda cdb cdc cdd cdg cdo cdp cdr cga cgb cgc cgd cgg cgo cgp cgr co- coa cob coc cod cog coo cop cor cpa cpb cpc cpd cpg cpo cpp cpr cra crb crc crd crg cro crp crr daa dab dac dad dag dao dap dar dba dbb dbc dbd dbg dbo dbp dbr dca dcb dcc dcd dcg dco dcp dcr dda ddb ddc ddd ddg ddo ddp ddr dga dgc dgd dgg dgp dgr doa dob doc dod dog doo dop dor dpa dpb dpc dpd dpg dpo dpp dpr dra drb drc drd drg dro drp drr g-d g-p gaa gab gac gad gag gao gap gar gba gbc gbd gbg gbo gbp gbr gca gcb gcc gcd gcg gco gcp gcr gda gdb gdc gdd gdo gdp gdr gga ggb ggc ggd ggg ggo ggp ggr goa gob goc god gog goo gop gor gpa gpb gpc gpd gpg gpo gpp gpr gra grb grc grd grg gro grp grr oaa oab oac oad oag oao oap oar ob- oba obb obc obd obg obo obp obr oc- oca ocb occ ocd ocg oco ocp ocr oda odb odc odd odg odo odp odr oga ogc ogd ogg ogo ogp oo- ooa oob ooc ood oog ooo oop oor op- opa opb opc opd opg opo opp opr or- ora orb orc ord org oro orp orr p-p paa pab pac pad pag pao pap par pba pbb pbc pbd pbg pbo pbp pbr pca pcb pcc pcd pcg pco pcp pcr pda pdb pdc pdd pdg pdo pdp pdr pga pgb pgc pgd pgg pgo pgp pgr poa pob poc pod pog poo pop por ppa ppb ppc ppd ppg ppo ppp ppr pra prb prc prd prg pro prp prr ra- raa rab rac rad rag rao rap rar rba rbb rbc rbd rbg rbo rbp rbr rca rcb rcc rcd rcg rco rcp rcr rda rdb rdc rdd rdg rdo rdp rdr rga rgb rgc rgd rgg rgo rgp rgr roa rob roc rod rog roo rop ror rpa rpb rpc rpd rpg rpo rpp rpr rra rrb rrc rrd rrg rrp rrr

a-do aaaa aaab aaac aaad aaap aaar aaba aabb aabc aabd aabp aaca aacb aacc aacd aaco aacp aacr aada aadc aaoo aapa aapc aapo aara aarc aard aaro aarp abaa abab abac abad abag abap abar abb- abba abbb abbo abbr abca abcb abcc abcd abcp abcr abda abdo abgd aboa abob abod aboo abor abpa abpc abpd abpp abpr abra abrc abro acaa acab acac acad acag acap acar acba acca accc accd acco accp acda acdb acdc acdp acga acgr acoa acod acog acop acor acpa acpd acpr acr- acra acrc acro acrr adaa adab adac adad adag adao adap adar adba adbc adcc adda addc addd addo addr adob adoc adod adog adoo ador adp- adra adro ag-o agac agad agag agao agap agar agba agbo agca agcc agco agda agga agob agod agog agoo agra agro agrp aoba aoca aopo aora aorb apac apao apap apar apba apbg apbr apca apcb apcc apcd apco apcr apda apdd apga apo- apoc apod apoo apop apor appa appc appd appr apra aprc apro arab arac arad arag arap arar arba arc- arca arco arda ardc ardo arga argb argo aroa arob arod aroo aror arpa 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 bapa bapc bapp bar- bara barb barc bard barg baro barr bbad bbbb bbdd bbdo bbga bbpr bbrc bbrg bcaa bcap bcar bcbc bcbg bcbp bcca bccc bcda bcor bcpp bcra bd-r bdbc bddc bdog bdpc bgca boab boac boad boag boar boba bobb bobo boca boco boda bodb bodo boga bogd bogg bogo boob booc bood boog boop boor bopa bopp bor- bora bord borg boro borr bpcp bpda bprc bprd brab brac brad brag brao brca brcb brda brdo broa brob broc brod brog broo bror brrr c-bo c-cd caaa caab caac caap caba cabg cabo cac- caca cacc caco cacr cada cadc cadd cado cadr caga cagg cago cagr caod caor capa capb capc capd capo capp cara carb carc card caro carp carr cbac cbar cbbc cbca cbcc cbcp cbcr cbdb cbdc cbdo cbga cbgb cbpc cbpp cbrd ccaa ccab ccac ccad ccag ccap ccar ccba ccbc ccca cccb cccc cccp ccdc ccdp ccdr ccga ccgc ccob ccoc ccod ccpa ccpp ccpr ccra ccrc ccrg ccrp cd-r cdaa cdac cdad cdba cdda cddb cddr cgac cgap cgcc cgcg cgro coad coag coba cobb cobo coca coco cocp coda codd cogo coob cood coop copa copd copg copo copp copr cor- cora corb corc cord corg coro corp corr cpaa cpac cpad cpag cpap cpbc cpca cpga cpgb cppa cppd crab crac crag crap crar crbc crca crcc crcr crda crdc crob croc crod croo crop cror crpc d-bo daab daad daag daap daar daba dabb dabo dabp daca