a-a a-b a-c aaa aab aac aae aak aao aas aax ab- aba abb abc abe abk abo abs abx ac- aca acb acc ace ack aco acs acx aea aeb aec aee aek aeo aes aex aka akb akc ake akk ako aks aoa aob aoc aoe aok aoo aos aox as- asa asb asc ase ask aso ass asx ax- axa axe axk axo axs axx baa bab bac bae bak bao bas bax bba bbb bbc bbe bbk bbo bbs bbx bca bcb bcc bce bck bco bcs bcx be- bea beb bec bee bek beo bes bex bka bkb bkc bke bkk bko bks bkx boa bob boc boe bok boo bos box bsa bsb bsc bse bsk bso bss bsx bxb bxo bxx c-- caa cab cac cae cak cao cas cax cba cbb cbc cbe cbk cbo cbs cbx cca ccb ccc cce cck cco ccs ccx ce- cea ceb cec cee cek ceo ces cex cka ckb ckc cko cks ckx co- coa cob coc coe cok coo cos cox csa csb csc cse csk cso css csx cxc cxk cxo cxs cxx eaa eab eac eae eak eao eas eax eba ebb ebc ebe ebk ebo ebs ebx ec- eca ecb ecc ece eck eco ecs ecx eea eeb eec eee eek eeo ees eex eka ekb ekc eke eko eks eo- eoa eob eoc eoe eok eoo eos es- esa esb esc ese esk eso ess esx ex- exa exc exe exo exs exx ka- kaa kab kac kae kak kao kas kax kba kbb kbc kbe kbk kbo kbs kbx kca kcb kcc kce kck kcs kcx ke- kea keb kec kee kek keo kes kex kkb kkc kke kkk kks koa kob koc koe kok koo kos ksa ksb ksc kse ksk kso kss kxo oaa oab oac oae oak oao oas oax ob- oba obb obc obe obk obo obs obx oc- oca ocb occ ock oco ocs ocx oea oeb oec oee oeo oes oex oka okb okc oke okk oko oks oo- ooa oob ooc ook ooo oos oox os- osa osb osc ose osk oso oss osx ox- oxa oxb oxc oxo oxx saa sab sac sae sak sao sas sax sba sbb sbc sbe sbk sbo sbs sbx sca scb scc sce sck sco scs scx se- sea seb sec see sek seo ses sex sk- ska skb skc ske skk sko sks skx soa sob soc soe sok soo sos sox ss- ssa ssb ssc sse ssk sso sss ssx sxc sxs xaa xac xak xas xbc xbe xbx xcb xcx xee xes xex xkb xke xks xoa xoc xok xoo xos xox xsa xsb xsc xss xxo xxx

-ase -ose a-ak a-be a-ok aaaa aaab aaac aaae aaas aaba aabb aabc aaca aacb aacc aace aack aaco aacs aaea aaec aaes aaka aake aaoe aaoo aasa aasc aase aass abaa abab abac abae abak abas abax abb- abba abbb abbe abbo abbs abca abcb abcc abcs abec abee abes aboa abob abok aboo abos abox abs- absa abse abss acaa acab acac acae acas acba acca accc acce acco accs ace- acea acec acek aces acke acks acoa acoe acos acsa acsc acse acss aeac aeas aebs aecb aeka aesc aess akaa akae akao akas akca akee akes akka akko akok akos aksa aoba aoca aoce aocs aoks aoss asaa asab asac asae asak asao asas asba asbo asc- asca ascb ascc asce asco ascx asea asec asee asek ases aska aske asko asks asob asoc asok asos assa assc asse assk asso asss axce axes axo- axoa axos axse axxo ba-x baaa baak baas baba babb babe babo babs bac- baca bacc bace back baco bacs baek baes bak- baka bake bako baks baos basa basc base bask baso bass bbas bbbb bbbs bbeb bbox bcaa bcas bcbc bcbs bcca bccc bccs bcec bces bcos bcsa bcsc bcss beak beas beba bebb bebe bebo beca beck becs beeb beek bees beka beke beko beks beo- beok beos bes- besa bese besk beso bess boab boac boak boas boba bobb bobe bobo bobs boca boce bock boco bocs boea boec boee boeo boes boka boke boko boks boob booc booe book boos boox bosa bosc bose bosk boso boss boxa bsaa bsac bsas bscs bsea bseb bsec bsee bses bsos bssc bsse c-bo caaa caab caac caas caba cabe cabo cabs cac- caca cacc cace cack caco caec caes caex caka cake caos casa casb casc case cask caso cass caxa cbac cbax cbbc cbbs cbca cbcc cbce cbcs cbea cbec cbee cbka cbko cbox cbsa cbsc cbse cbxa ccaa ccab ccac ccas ccba ccbc ccca cccb cccc cccs ccee ccob ccoc ccsa ccss ceac ceas ceba cebs cec- ceca cece ceco cecs ceeb ceec cees ceke ceos cesa cesc cese cess cexe ckac ckbc ckbe ckbx ckck ckco ckcs ckcx ckoa ckob ckoc ckoo ckos cksa cksb ckso coak coas coax coba cobb cobe cobo cobs coca coce cock coco coes coex cok- coka coke coko coob cook coos cosa cosc cose coso coss coxa coxe csaa csab csac csak csao csas cscb cscc csce csco cscs csea csec csee cska csks csob csos csox cssa csse cxxx eaba eaca eacc eaec easa ease easo ebac ebba ebbc ebbo ebbs ebcc ebes eboe eboo ebos ebox ebsa ecaa ecac ecao ecbc ecbe ecca eccb eccc ecce ecco eces ecka ecko ecks eco- ecos ecsa ecsc ecse ecss eeca eecs eeea eeee eees eeka eeke eeks eeoc eese eesk eka- ekab ekco ekeb ekek ekes ekka ekoa ekos eoes eoka esab esac esas esba esbo esbs esca escb esce esco escs esea esee esek eseo eses eska eske esko esks eso- esok esos esox essa esse esso exa- exco exec exes exo- exos k-os kaaa kaab kaak kaas kaba kabb kabc kabe kabo kacb kacc kace kaco kacs kaeo kaes kaka kakc kake kakk kako kaks kakx kaoa kaoc kaok kaos kaox