a-a a-b a-c aaa aab aac aak aas aau aay ab- aba abb abc abk abs abu aby ac- aca acb acc ack acs acu acy aka akb akc akk aks aku as- asa asb asc ask ass asu asy au- aua aub auc auk aus ay- aya ayc ayk ays ayu b-u baa bab bac bak bas bau bay bba bbb bbc bbk bbs bbu bby bca bcb bcc bck bcs bcu bcy bka bkb bkc bkk bks bsa bsb bsc bsk bss bsu bsy bua bub buc buk bus buu buy by- bya byc byk bys byu c-- caa cab cac cak cas cau cay cba cbb cbc cbk cbs cbu cby cca ccb ccc cck ccs ccu cka ckb ckc cks cky csa csb csc csk css csu csy cua cub cuc cuk cus cuu cuy cya cyb cyc cyk cys ka- kaa kab kac kak kas kau kay kba kbb kbc kbk kbs kbu kca kcb kcc kck kcs kcu kkb kkc kkk kks kku kky ksa ksb ksc ksk kss ksu kub kuc kuk kus kuu kuy kya kyc kys kyu saa sab sac sak sas sau say sba sbb sbc sbk sbs sbu sby sca scb scc sck scs scu sk- ska skb skc skk sks sku sky ss- ssa ssb ssc ssk sss ssu sua sub suc suk sus suu suy sy- sya syb syc syk sys syu ua- uaa uab uac uak uas uau uay uba ubb ubc ubk ubs ubu uby uca ucb ucc uck ucs ucu uka ukb ukc ukk uku usa usb usc usk uss usu uua uuc uus uuu uyc uys uyu yaa yab yac yak yas yau yay ybc ybs yby yca ycc ycs ycu ycy yka ykk ysa ysb ysc ysk yss ysu ysy yua yuk yus yuu yuy yyb yyc yys yyu yyy

a-ak a-ya aaaa aaab aaac aaas aaba aabb aabc aaby aaca aacb aacc aack aacs aacu aacy aaka aaku aasa aasc aass aasu aaus abaa abab abac abak abas abau abay abb- abba abbb abbs abby abca abcb abcc abcs abs- absa abss absu abua abuk abus abuy abyc abys abyy acaa acab acac acas acba acca accc accs accu accy acks acsa acsc acss acu- acus akaa akas akay akca akka akku aksa aksu akua asaa asab asac asak asas asau asay asba asbu asby asc- asca ascb ascc aska asks asky assa assc assk asss assu assy asub asus asya auaa auby auca auks ausa ausu ayas ayay ayca aysu ayub ayya baaa baak baas baba babb babs babu baby bac- baca bacc back bacs bak- baka baks baku basa basc bask bass basu bau- bauk baya bays bayu bbas bbau bbay bbbb bbbs bcaa bcas bcbc bcbs bcca bccc bccs bcsa bcsc bcss bcuc bkcy bsaa bsac bsas bscs bssc buba bubb bubs bubu buca bucc buck bucs bucu buka bukk buku buky busa busc busk buss busu busy buus buys buyu byas byck bysb byss bysy caaa caab caac caas caba cabs cabu caby cac- caca cacc cack caka caky casa casb casc cask cass casu cauc cauk caus cays cbac cbbc cbbs cbca cbcc cbcs cbcu cbka cbsa cbsc cbus ccaa ccab ccac ccas ccba ccbc ccca cccb cccc cccs cccu ccsa ccss ccuc ccus ckac ckbc ckck ckcs ckcy cksa cksb csaa csab csac csak csas cscb cscc cscs cska csks cssa csua csus csys cuau cub- cuba cubb cubs cuby cuca cucc cuck cuk- cuka cusa cusb cusk cuss cusu cusy cuy- cya- cyaa cyba cybb cybc cyc- cyca cycb cycc cycs cyy- cyyc kaaa kaab kaak kaas kaay kaba kabb kabc kabu kaby kacb kacc kacs kacu kacy kaka kakc kakk kaks kaku kas- kasa kasb kasc kask kass kasu kau- kaub kauc kauk kaus kaya kays kbaa kbab kbac kbak kbas kbay kbba kbbb kbbc kbbk kbbs kbbu kbca kbcb kbck kbcs kbcu kbcy kbkb kbkk kbky kbsa kbsb kbsk kbss kbsu kbsy kbua kbub kbuc kbuk kbus kbuu kbuy kbya kbyb kbys kbyu kcaa kcab kcac kcas kcau kcba kcbc kcbk kcbs kcbu kcca kccb kccc kcck kccu kccy kckc kckk kcky kcsa kcsb kcsc kcss kcsu kcsy kcua kcub kcuk kcya kcyk kcys kcyy kkaa kkac kkay kkba kkbb kkbs kkcb kkck kkcs kkcy kkkk kksa kkss kksu kkua kkus kkuu kkya kkyc kkys kkyy ksab ksac ksak ksas ksau ksba ksbc ksbs ksby ksca kscb ksck kscs kscu kscy kska kskb kskk ksks ksku ksky kssa ksss kssu ksua ksub ksuu ksyc ksyy kuac kuau kuba kubb kubc kubs kubu kuby kuca kucb kucc kuka kukk kuks kuku kuky kusa kusb kusc kusu kuub kuuk kuuu kuya kuyu kuyy kyaa kyak kyay kyba kybb kybc kyby kyca kycc kyck kycs kyka kykc kykk kyks kyky kysa kysc kysk kyuk kyus kyuu kyya kyyk kyys kyyy sa-c saab saac saak saas saba sabb sabc sabs sabu saca sacc sack sacs sacu sacy saka sakb sakk saks saku saky sasa sasc sask sass saua sauc sauk saus saya says sbaa sbac sbas sbbs sbca sbcc sbcs sbsa sbus scaa scab scac scak scas scay scba sccc sccs sccy sck- scsa scsc scsu scua scub skab skac skss skua sky- skys skyy ssaa ssab ssac ssas ssau ssby ssca sscc sscs sssa sssb sssc ssss suas suay sub- suba subb subs suc- succ suck sucs suka suks suku suky sus- susa susk suss susu susy suus suya suyu syck syss syyk uabc uaca uasa uaua ubac ubay ubba ucak ucas ucbc ucca ucka ucky ucsa ucsb ucsc ucsu ucua ukba ukcc ukky uksa uksc us-a us-k usaa usac usak usas usba usbc usbs usca uscc uscs uska ussa ussb ussc usss ussu ussy usua usus uuuu uyas yaak yaas yaba yacc yack yacy yaka yaks yaku yasa yask yass yasu yaya yays yayu ybas ybbs ycab yccc ycsb yksc ysay ysby yssu ysyb yuba yubu yuca yuck yuka yuks yuku yuky yusa yuya yuyu yyyy

-aaa- a-sky aaaas aaasa aaass aabaa aabba aacbc