a-a a-b a-c aaa aab aac aaf aao aas aay ab- aba abb abc abf abo abs aby ac- aca acb acc acf aco acs acy af- afa afb afc aff afo afs afy aoa aob aoc aof aoo aos as- asa asb asc asf aso ass asy ay- aya ayc ayf ayo ays baa bab bac baf bao bas bay bba bbb bbc bbf bbo bbs bby bca bcb bcc bcf bco bcs bcy bfa bfb bfc bff bfo bfs bfy boa bob boc bof boo bos boy bsa bsb bsc bsf bso bss bsy by- bya byc byf byo bys c-- caa cab cac caf cao cas cay cba cbb cbc cbf cbo cbs cby cca ccb ccc ccf cco ccs cfa cfb cfc cff cfo cfs co- coa cob coc cof coo cos coy csa csb csc csf cso css csy cya cyb cyc cyf cyo cys faa fab fac faf fao fas fay fba fbb fbc fbf fbo fbs fca fcb fcc fcf fco fcs fcy ffa ffc fff ffo ffs ffy foa fob foc fof foo fos foy fsa fsb fsc fsf fso fss fy- fya fyb fyc fyo oaa oab oac oaf oao oas ob- oba obb obc obf obo obs oby oc- oca ocb occ ocf oco ocs of- ofa ofb ofc off ofo ofs oo- ooa oob ooc oof ooo oos os- osa osb osc osf oso oss oya oyo oys saa sab sac saf sao sas say sba sbb sbc sbf sbo sbs sby sca scb scc scf sco scs sfa sfb sfc sff sfo sfs soa sob soc sof soo sos soy ss- ssa ssb ssc ssf sso sss sy- sya syb syc sys yaa yab yac yaf yao yas yay ybc ybf ybs yby yca ycc ycf yco ycs ycy yfa yfc yff yfs yob yoc yof yoo yos yoy ysa ysb ysc yso yss ysy yyb yyc yyf yys yyy

a-ya a-yo aaaa aaab aaac aaaf aaas aaba aabb aabc aaby aaca aacb aacc aacf aaco aacs aacy aafa aafb aafc aaff aaoo aasa aasc aasf aass abaa abab abac abaf abas abay abb- abba abbb abbo abbs abby abca abcb abcc abcf abcs abff aboa abob abof aboo abos aboy abs- absa absf abss abyc abys abyy acaa acab acac acas acba acca accc accf acco accs accy acfc acfs acoa acos acoy acsa acsc acss afaa afao afbs afca afcb afcc afcs affa affc affo affs affy afoa afoo afsa afsb afsc aoba aoca aocs aoss asaa asab asac asaf asao asas asay asba asbo asby asc- asca ascb ascc asco asfa asob asoc asof asos assa assc asso asss assy asya ay-o ayao ayas ayay ayca ayoo ayos ayya baaa baaf baas baba babb babo babs baby bac- baca bacc baco bacs bafc baff bafo baos basa basc basf baso bass baya bayo bays bbas bbay bbbb bbbs bbfc bboy bbyo bcaa bcas bcbc bcbs bcca bccc bccs bcfc bcof bcos bcsa bcsc bcss bfas bfca bfcs bffs boab boac boas boba bobb bobo bobs boby boca boco bocs bofa boff bofs boob booc boof boos bosa bosc boso boss boya boyf boyo boys bsaa bsac bsas bscs bsfa bsfc bsff bsfs bsos bssc byas byoa byob byoc byos bysb byso byss bysy c-bo caaa caab caac caaf caas caba cabf cabo cabs caby cac- caca cacc caco cafa cafb cafc caff cafs caos casa casb casc caso cass cayo cays cbac cbbc cbbs cbca cbcc cbcs cbfb cbfc cbsa cbsc ccaa ccab ccac ccaf ccas ccba ccbc ccca cccb cccc cccf cccs ccfa ccfc ccff ccob ccoc ccsa ccsf ccss cfaa cfab cfac cfao cfbc cfbs cfca cfcb cfcf cfco cfcs cfcy cffb cfoa cfos cfsa coas coba cobb cobo cobs coby coca coco cofc coff cofs coob coof coos cosa cosc coso coss cosy coya coyf coyo coys csaa csab csac csao csas csbf cscb cscc cscf csco cscs csfc csob csos cssa csys cya- cyaa cyba cybb cybc cybo cyc- cyca cycb cycc cycs cyfs cyoa cyy- cyyc faaa faac faas faba fabo fabs faca facc facs facy fafa fafc faff fafo fasa fasc faso fass faya fayo fays fcab fcas fcba fcbs fcca fccf fcsc ffcc ffff ffsa ffss foaf foba fobs foca foco focs fofo foof foos fosa fosb foso foss foya foys fsas fscb fscc fsfo fssa fssc fssf oafc oafo oafs oasc oass oasy obas obay obba obbo obby obos oboy obss ocab ocac ocas ocbc occa occc ocfa ocos ocsa ocys ofas ofay off- offa offc offo offs offy ooaa ooba ooby ooff oofs oofy oooo ooos oosa osaf osas osay osba osby osca oscc osco osfa osoo osos ossa ossb osso ossy oyas oyss s-os sa-c saab saac saaf saas saba sabb sabc sabo sabs saca sacc saco sacs sacy safa safb safc saff safo saos sasa sasc sasf saso sass saya sayo says sbaa sbac sbas sbbs sbca sbcc sbcs sbfc sbsa scaa scab scac scaf scas scay scba sccc sccs sccy scfa scfc scob scoo scsa scsc scso sfas sfba sfbc sfca sfcc sfco sfcs sffc sfos sfss soas soay soba sobo sobs soca soco socs socy sofa sofo soof soos sooy sosa soso soss soya soyo soys ssaa ssab ssac ssao ssas ssby ssca sscc sscs ssfc ssoc sssa sssb sssc sssf ssss sybo syco syff syfy syso syss yaaf yaas yaba yabo yacc yaco yacy yafa yafc yaff yafo yasa yaso yass yaya yayo yays ybas ybbs ycab ycao yccc ycsb yoba yobo yobs yoff yoof yoso yoyo ysay ysby ysco ysyb yyff yyyy

-aaa- aaaas aaaoc aaasa aaass aabaa aabba aabfs aacbc aacfo aacos aacsa aacsb aacss abaab ababa ababs ababy abaca abaco abacs abasa abass abasy abaya abays abbac abbas abbay abbos abbyy abcas abccc abfab abffs aboab abobo aboso aboys absys abyss acaca acacb acacy acass acaya accas accoy acfas acofs acoss afoss aoos asaba asabc asaco asafa asafo asasa asbca asbos ascao asco- asocs asofa asoof asosa assab