a-a a-b a-c aaa aab aac aao aar aas aay ab- aba abb abc abo abr abs aby ac- aca acb acc aco acr acs acy aoa aob aoc aoo aor aos ar- ara arb arc aro arr ars ary as- asa asb asc aso asr ass asy ay- aya ayc ayo ayr ays baa bab bac bao bar bas bay bba bbb bbc bbo bbr bbs bby bca bcb bcc bco bcr bcs bcy boa bob boc boo bor bos boy bra brb bro brr brs bry bsa bsb bsc bso bsr bss bsy by- bya byc byo byr bys c-- caa cab cac cao car cas cay cba cbb cbc cbo cbr cbs cby cca ccb ccc cco ccr ccs co- coa cob coc coo cor cos coy cra crb crc cro crr crs cry csa csb csc cso csr css csy cya cyb cyc cyo cyr cys oaa oab oac oao oar oas ob- oba obb obc obo obr obs oby oc- oca ocb occ oco ocr ocs oo- ooa oob ooc ooo oor oos or- ora orb orc oro orr ors ory os- osa osb osc oso osr oss oya oyo oys ra- raa rab rac rao rar ras ray rba rbb rbc rbo rbr rbs rca rcb rcc rco rcr rcs roa rob roc roo ror ros roy rra rrb rrc rrr rrs rsa rsb rsc rso rsr rss ry- rya ryc ryo ryr rys ryy saa sab sac sao sar sas say sba sbb sbc sbo sbr sbs sby sca scb scc sco scr scs soa sob soc soo sor sos soy sr- sra srb src sro srr srs sry ss- ssa ssb ssc sso ssr sss sy- sya syb syc syr sys yaa yab yac yao yar yas yay ybc ybr ybs yby yca ycc yco ycs ycy yob yoc yoo yor yos yoy yra yrc yro yrs ysa ysb ysc yso ysr yss ysy yyb yyc yys yyy

a-ya a-yo aaaa aaab aaac aaar aaas aaba aabb aabc aaby aaca aacb aacc aaco aacr aacs aacy aaoo aara aarc aaro aars aasa aasc aass abaa abab abac abar abas abay abb- abba abbb abbo abbr abbs abby abca abcb abcc abcr abcs aboa abob aboo abor abos aboy abra abrc abro abrs abry abs- absa abss abyc abys abyy acaa acab acac acar acas acba acca accc acco accs accy acoa acor acos acoy acr- acra acrc acro acrr acrs acry acsa acsc acss aoba aoca aocs aora aorb aors aoss arab arac arar aras aray arba arbs arby arc- arca arco arcs aroa arob aroo aror aros arr- arra arrc arro arrr arrs arry ars- arsa arsc arso arsy ary- arya arys asaa asab asac asao asar asas asay asba asbo asby asc- asca ascb ascc asco ascr asob asoc asor asos asra asrc asro asrs assa assc asso assr asss assy asya ay-o ayao ayar ayas ayay ayca ayoo ayos ayra ayry ayya baaa baar baas baba babb babo babr babs baby bac- baca bacc baco bacs baos bar- bara barb barc baro barr bars bary basa basc baso bass baya bayo bays bbas bbay bbbb bbbs bboy bbrc bbyo bcaa bcar bcas bcbc bcbs bcca bccc bccs bcor bcos bcra bcrs bcsa bcsc bcss boab boac boar boas boba bobb bobo bobs boby boca boco bocs boob booc boor boos bor- bora boro borr bors bory bosa bosc boso boss boya boyo boys brab brac brao bras bray brca brcb broa brob broc broo bror bros brrr brrs brsb brsr bry- brya bryo bsaa bsac bsas bscs bsos bsra bssc byar byas byoa byob byoc byos bysb byso byss bysy c-bo caaa caab caac caas caba cabo cabs caby cac- caca cacc caco cacr caor caos cara carb carc caro carr cars cary casa casb casc caso casr cass cayo cayr cays cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbry cbsa cbsc ccaa ccab ccac ccar ccas ccba ccbc ccca cccb cccc cccs ccob ccoc ccra ccrc ccrs ccsa ccss coas coba cobb cobo cobs coby coca coco coob coos cor- cora corb corc coro corr cors cory cosa cosc coso coss cosy coya coyo coyr coys crab crac crar cras cray crbc crca crcc crcr crob croc croo cror croy crsa crss cry- crya cryb cryo crys csaa csab csac csao csar csas cscb cscc csco cscr cscs csob csor csos csra csrc csrs cssa cssr csys cya- cyaa cyar cyba cybb cybc cybo cyc- cyca cycb cycc cycs cyoa cyra cyrs cyy- cyyc oara oars oary oasc oass oasy obas obay obba obbo obby obor obos oboy obra obro obsr obss ocab ocac ocas ocbc occa occc ocos ocra ocro ocrr ocrs ocsa ocys ooaa ooba ooby oocr oooo ooos oora oory oosa orab orac orao orar oras oray orba orbb orbo orbs orby orca orco orcs oro- oror oros oroy orra orro orrs orry orsa orso orsy orya orys osar osas osay osba osby osca oscc osco osoo osor osos osro ossa ossb osso ossy oyas oyss raab raas raba rabb rabo rabs raby rac- raca racc raco racs racy raob raoc raos rara rarb raro rars rary rasa rasc raso rass rasy raya rayr rays rbbb rbbr rbbs rbss rcac rcas rcbc rcbo rccb rccc rccs rcos rcsa rcsc rcss rcyc roab roar roas rob- roba robb robo robs roby roca rocc roco rocs roob roor roos rora rorc roro rory rosa rosc roso ross rosy roya roys rras rrrr rsaa rscc rscs rscy rsos rssa ryas ryba ryob rysy s-os sa-c saab saac saar saas saba sabb sabc sabo sabr sabs saca sacc saco sacr sacs sacy saor saos sara sarc saro sarr sars sary sasa sasc saso sass saya sayo sayr says sbaa sbac sbar sbas sbbs sbca sbcc sbcs sbor sbsa scaa scab scac scar scas scay scba sccc sccs sccy scob scoo scor scr- scra scrc scrs scry scsa scsc scso scsr soar soas soay soba sobo sobr sobs soca