a-a a-b a-c a-t aaa aab aac aao aas aat aay ab- aba abb abc abo abs abt aby ac- aca acb acc aco acs act acy aoa aob aoc aoo aos aot as- asa asb asc aso ass ast asy at- ata atb atc ato ats att ay- aya ayc ayo ays ayt baa bab bac bao bas bat bay bba bbb bbc bbo bbs bbt bby bca bcb bcc bco bcs bct bcy boa bob boc boo bos bot boy bsa bsb bsc bso bss bst bsy bta btb btc bto bts btt bty by- bya byc byo bys byt c-- caa cab cac cao cas cat cay cba cbb cbc cbo cbs cbt cby cca ccb ccc cco ccs cct co- coa cob coc coo cos cot coy csa csb csc cso css cst csy cta ctb ctc cto cts ctt cty cya cyb cyc cyo cys cyt oaa oab oac oao oas oat ob- oba obb obc obo obs obt oby oc- oca ocb occ oco ocs oct oo- ooa oob ooc ooo oos oot os- osa osb osc oso oss ost ot- ota otb otc oto ots ott oya oyo oys saa sab sac sao sas sat say sba sbb sbc sbo sbs sbt sby sca scb scc sco scs sct soa sob soc soo sos sot soy ss- ssa ssb ssc sso sss sst sta stb stc sto sts stt sty sy- sya syb syc sys syt taa tab tac tao tas tat tay tba tbb tbc tbo tbs tbt tca tcb tcc tco tcs tct to- toa tob toc too tos tot toy tsa tsb tsc tso tss tst tsy tta ttb ttc tto tts ttt tty tya tyc tyo tys tyt yaa yab yac yao yas yat yay ybc ybs yby yca ycc yco ycs ycy yob yoc yoo yos yot yoy ysa ysb ysc yso yss yst ysy yta ytc yto yts ytt yyb yyc yys yyt yyy

a-ya a-yo aaaa aaab aaac aaas aaba aabb aabc aabt aaby aaca aacb aacc aaco aacs aact aacy aaoo aasa aasc aass aast aata aatc aatt abaa abab abac abas abat abay abb- abba abbb abbo abbs abbt abby abca abcb abcc abcs abct aboa abob aboo abos abot aboy abs- absa abss abta abts abyc abys abyt abyy ac-t acaa acab acac acas acat acba acca accc acco accs acct accy acoa acos acot acoy acsa acsc acss acst acta actc acto acts actt aoba aoca aocs aoss aotc asaa asab asac asao asas asat asay asba asbo asby asc- asca ascb ascc asco asct asob asoc asos asot assa assc asso asss asst assy asta astb astc asto asts asty asya at-t ataa atab atac atas atat atay atbs atca atcc atco atcs atob atoc atos atot atoy atsb atsc atst atta atto atts atty atya atys ay-o ayao ayas ayat ayay ayca ayoo ayos ayot ayta ayto ayya baaa baas baat baba babb babo babs baby bac- baca bacc baco bacs bact baos basa basc baso bass bast bata batc bato bats batt baty baya bayo bays bayt bbas bbay bbbb bbbs bboy bbyo bcaa bcas bcat bcbc bcbs bcca bccc bccs bcos bcsa bcsc bcss bctc bcts boab boac boas boat boba bobb bobo bobs boby boca boco bocs boob booc boos boot bosa bosc boso boss bost bota botb boto bots bott boty boya boyo boys bsaa bsac bsas bsat bscs bsos bssc bsts btaa btcc btcs btob btss bttb byas byoa byob byoc byos bysb byso byss byst bysy byts c-bo caaa caab caac caas caat caba cabo cabs caby cac- caca cacc caco caos casa casb casc caso cass cast cat- cata catb catc cato cats catt caty cayo cays cbac cbat cbbc cbbs cbca cbcc cbcs cbct cbot cbsa cbsc cbta cbtc cbyt ccaa ccab ccac ccas ccat ccba ccbc ccca cccb cccc cccs ccob ccoc ccsa ccss ccst cctb cctc cctt coas coat coba cobb cobo cobs coby coca coco coct coob coos coot cosa cosc coso coss cost cosy cota cotb cotc coto cots cott coty coya coyo coys coyt csaa csab csac csao csas csat cscb cscc csco cscs csob csos csot cssa csta cstc csto csts csys ctab ctba ctbs ctca ctos ctot ctsa ctsc ctss ctta ctts cya- cyaa cyba cybb cybc cybo cyc- cyca cycb cycc cycs cyoa cyst cyt- cyta cytb cyto cyy- cyyc oasc oass oast oasy oats oaty obas obay obba obbo obby obos obot oboy obss obst obts ocab ocac ocas ocat ocbc occa occc occt ocos ocsa oct- octa octo octs octy ocys ooaa ooba ooby oooo ooos oosa oost ootb oots ooty osas osat osay osba osby osca oscc osco osoo osos ossa ossb osso ossy osta ostc osts osyt otac otas otay otbs oto- otoo otos otoy otsa otso otta otto otts oyas oyss oyst s-os sa-c saab saac saas saat saba sabb sabc sabo sabs saca sacc saco sacs sact sacy saos sasa sasc saso sass sast sata satb satc sato sats satt saya sayo says sbaa sbac sbas sbbs sbca sbcc sbcs sbct sbot sbsa sbst sbtc scaa scab scac scas scat scay scba sccc sccs scct sccy scob scoo scot scsa scsc scso scst sctc scto scts soas soat soay soba sobo sobs sobt soca soco socs socy soos soot sooy sosa soso soss sost sota sotc soto sots soya soyo soys soyt ssaa ssab ssac ssao ssas ssat ssby ssca sscc sscs ssoc ssot sssa sssb sssc ssss ssta sstb sstc ssts stab stac stas stat stay stbc stbs stca stcc stcs stoa stob stoo stos stot stoy stss sttc stys sybo syco syso syss syst sytt taa- taas taat taba tabb tabc tabo tabs taby taca tacc taco tacs tact tacy taoa taos tasa tasb tasc tass tast tasy tata tatb tato tats tatt taty taya tayo tays tayt tayy tbas tbbs tbca tbcb tbcc tbst tbta tcbs tcby tcca tccc tcos tctc tcts to-y toab toas