a-a a-b a-c aaa aab aac aan aao aas aau ab- aba abb abc abn abo abs abu ac- aca acb acc acn aco acs acu an- ana anb anc ann ano ans anu aoa aob aoc aon aoo aos aou as- asa asb asc asn aso ass asu au- aua aub auc aun auo aus b-u baa bab bac ban bao bas bau bba bbb bbc bbn bbo bbs bbu bca bcb bcc bcn bco bcs bcu bna bnb bnc bnn bno bns bnu boa bob boc bon boo bos bou bsa bsb bsc bsn bso bss bsu bua bub buc bun buo bus buu c-- caa cab cac can cao cas cau cba cbb cbc cbn cbo cbs cbu cca ccb ccc ccn cco ccs ccu cn- cna cnb cnc cnn cno cns cnu co- coa cob coc con coo cos cou csa csb csc csn cso css csu cua cub cuc cun cuo cus cuu naa nab nac nan nao nas nau nba nbb nbc nbn nbo nbs nbu nca ncb ncc ncn nco ncs ncu nna nnb nnc nnn nno nns nnu no- noa nob noc non noo nos nou nsa nsb nsc nsn nso nss nsu nua nub nuc nun nuo nus nuu oaa oab oac oan oao oas oau ob- oba obb obc obn obo obs obu oc- oca ocb occ ocn oco ocs ocu on- ona onb onc onn ono ons onu oo- ooa oob ooc oon ooo oos os- osa osb osc osn oso oss osu ou- oua ouc oun ouo ous saa sab sac san sao sas sau sba sbb sbc sbn sbo sbs sbu sca scb scc scn sco scs scu sna snb snc snn sno sns snu soa sob soc son soo sos sou ss- ssa ssb ssc ssn sso sss ssu sua sub suc sun suo sus suu ua- uaa uab uac uan uao uas uau uba ubb ubc ubn ubo ubs ubu uca ucb ucc ucn uco ucs ucu un- una unb unc unn uno uns unu uoa uob uoc uon uoo uos usa usb usc usn uso uss usu uua uuc uun uus uuu

-ana -ous a-un aaaa aaab aaac aaan aaas aaba aabb aabc aaca aacb aacc aacn aaco aacs aacu aana aaon aaoo aasa aasc aass aasu aaus abaa abab abac aban abas abau abb- abba abbb abbo abbs abca abcb abcc abcn abcs abnu aboa abob abon aboo abos abou abs- absa abss absu abua abun abus acaa acab acac acan acas acba acca accc acco accs accu acoa acon acos acou acsa acsc acss acu- acuo acus ana- anaa anab anac anan anao anas anau anba anbb anbo anbu anca ancc anco anna annb anno anns ano- anoa anon anos ansa anso ansu anua anub anun anus aoba aoca aocs aonb aono aoss aoun aous asaa asab asac asan asao asas asau asba asbo asbu asc- asca ascb ascc asco asnc asno asob asoc ason asos asou assa assc assn asso asss assu asub asun asus auaa auca auna ausa ausu baaa baan baas baba babb babo babs babu bac- baca bacc bacn baco bacs bana banc bann bano bans banu baon baos basa basc baso bass basu bau- bbas bbau bbbb bbbs bcaa bcas bcbc bcbs bcca bccc bccs bcnu bcos bcsa bcsc bcsn bcss bcuc bnas bnoc bnss boab boac boan boas boba bobb bobo bobs bobu boca boco bocs bocu bona bonc bonn bono bons bonu boob booc boon boos bosa bosc bosn boso boss bosu boua boun bous bsaa bsac bsas bscs bsns bson bsos bssc buba bubb bubo bubs bubu buca bucc buco bucs bucu buna bunb bunn buno buns bunu buon busa busc buss busu buus c-bo caaa caab caac caan caas caba cabo cabs cabu cac- caca cacc caco cana canc cann cano cans caos casa casb casc caso cass casu cauc cauo caus cbac cbbc cbbs cbca cbcc cbcn cbcs cbcu cbna cbsa cbsc cbsn cbus ccaa ccab ccac ccas ccba ccbc ccbn ccca cccb cccc cccs cccu ccna ccnb ccnc ccns ccnu ccob ccoc ccsa ccsn ccss ccuc ccus cnaa cnac cnas cnbc cnco cnna cnsa cnss coan coas coba cobb cobo cobs cobu coca coco cocu con- cona conc conn cono cons coob coon coos cosa cosc coso coss coua coub coun cous csaa csab csac csao csas cscb cscc csco cscs csob csos cssa csua csus cuan cuau cub- cuba cubb cubs cuca cucc cucn cuna cuno cuon cusa cusb cuso cuss cusu naaa naab naac naan naas naba nabc nabo nabs nabu naca nacc naco nacs nan- nana nanb nann nano nans nanu naoc naos nas- nasa nasb nasc naso nass nasu nauo naus nbaa nbas nbbc nbbo nbca nbcc nbco nbcs ncaa ncac ncba ncbc ncbs ncca nccc nccn nccs nccu ncna ncnc ncoa ncoc ncos ncsa ncsc ncss ncua nnnn nnos nnsa nnss noaa noac noba nobc nobo nobs nobu noco nocs non- nona nonn nono nons nonu noo- noob noon nooo noos nos- nosa noss nosu noun nous nsaa nsac nsbo nsca nscc nscs nsna nsos nsou nssa nssb nssc nsso nsss nsub nuan nuba nubc nubs nuca nucs nucu nuna nunc nunn nuno nuns nuoc nuon nuss nusu oaau oasc oass oban obas obba obbo obon obos obsn obss obus ocab ocac ocan ocas ocbc occa occc occn ocna ocon ocos ocsa onab onan onas onc- onca onco onna onno onon onos onsc onso onus ooaa ooba oona oons oooo ooos oosa oous osan osas osba osca oscc osco osno osoo osos ossa ossb osso ossu osun ouac ouan oubs oucc oun- ouna ousa ouu- s-os sa-c saab saac saan saas saba sabb sabc sabo sabs sabu saca sacc sacn saco sacs sacu sana sann sano sans sanu saon saos saou sasa sasc saso sass saua sauc saun saus sbaa sbac sbas sbbs sbca sbcc sbcs sbsa sbus scaa scab scac scan scas scba sccc sccs scna scob scon scoo scsa scsc scsn scso scsu scua