a-a a-b aaa aab aad aaf aak aan aao ab- aba abb abd abf abk abn abo ad- ada adb add adf adk adn ado af- afa afb afd aff afk afn afo aka akb akd akk akn ako an- ana anb and anf ank ann ano aoa aob aod aof aok aon aoo baa bab bad baf bak ban bao bba bbb bbd bbf bbk bbn bbo bda bdb bdd bdf bdk bdo bfa bfb bfd bff bfn bfo bka bkb bkf bkk bkn bko bna bnb bnd bnf bnk bnn bno boa bob bod bof bok bon boo daa dab dad daf dak dan dao dba dbb dbd dbf dbk dbn dbo dda ddb ddd ddf ddk ddn ddo dfa dfb dfd dff dfk dfn dfo dka dkb dkk dko dna dnb dnd dnf dnk dnn dno doa dob dod dof dok don doo faa fab fad faf fak fan fao fba fbb fbd fbf fbk fbn fbo fda fdb fdd fdf fdk fdn fdo ffa ffd fff ffk ffn ffo fka fkb fkf fkk fna fnb fnd fnf fnk fnn foa fob fof fok fon foo ka- kaa kab kad kaf kak kan kao kba kbb kbd kbf kbk kbn kbo kda kdb kdf kdk kdo kfa kfd kff kfo kkb kkk kkn kn- kna knd knf knk knn kno koa kob kod kof kok kon koo naa nab nad naf nak nan nao nba nbb nbd nbf nbk nbn nbo nda ndb ndd ndf ndk ndn ndo nfa nfb nfd nff nfk nfn nfo nka nkf nkk nkn nko nna nnb nnf nnk nnn nno no- noa nob nod nof nok non noo oaa oab oad oaf oak oan oao ob- oba obb obd obf obk obn obo oda odb odd odf odn odo of- ofa ofb ofd off ofn ofo oka okb okd okk oko on- ona onb ond onf onk onn ono oo- ooa oob ood oof ook oon ooo

-ana a-ak a-do a-ok aaaa aaab aaad aaaf aaan aaba aabb aabd aada aafa aafb aafd aaff aaka aana aand aaon aaoo abaa abab abad abaf abak aban abb- abba abbb abbo abda abdo abff aboa abob abod abof abok abon aboo adaa adab adad adak adan adao adba adda addd addn addo adfa adna adob adod adok adon adoo afaa afad afak afan afao afdb affa affo afka afoa afoo akaa akan akao akdn akka akko akna akok akon ana- anaa anab anad anak anan anao anba anbb anbo and- anda ando anfa anfo ank- anka anko anna annb anno ano- anoa anod anon aoba aonb aono baaa baad baaf baak baan baba babb babo bada badb badd bado baff bafo bak- baka bako bana band bank bann bano baon bbad bbbb bbdd bbdo bbfn bdna boab boad boak boan boba bobb bobo boda bodb bodo bofa bofd boff boka bokn boko bona bond bonk bonn bono boob bood boof book boon d-bo d-na daab daad daan daba dabb dabo dada dado dafa daff dafo daka dako dana dand dank dann dano daon dbfo dddd dfaf dffa dkba dnaa dnab dnad dnan doab doak doan doba dobb dod- doda dodd dodo doff doka doko dona dond donk donn dono doob dood doof dook doon f--k faaa faad faan faba fabd fabo fada fadd fado fafa faff fafo fako fana fand fank fano faon fdoa ffff fkab fndd fndn foad foaf foak foan foba foda fofo fond fono food foof fook foon kaaa kaab kaaf kaak kaan kaba kabb kabd kabf kabo kad- kada kadd kadf kado kafa kaff kafn kaka kakk kakn kako kana kanb kand kanf kann kano kaoa kaok kaon kbaa kbab kbad kbak kbba kbbb kbbd kbbf kbbk kbbo kbdb kbdf kbdn kbdo kbfb kbff kbfk kbfo kbkb kbkf kbkk kbko kbna kbnd kbnn kbno kboa kbob kbod kbok kbon kboo kdaa kdab kdad kdaf kdak kdao kdbb kdbn kddb kddd kddf kddk kdfn kdfo kdka kdkb kdkd kdkk kdkn kdko kdna kdnd kdnk kdnn kdno kdok kfab kfan kfbk kfbn kfda kfdn kffa kffb kfff kffk kffn kfka kfkb kfna kfnf kfnk kfnn kfno kfok kfon kfoo kkaa kkan kkba kkbb kkbd kkbn kkbo kkda kkdd kkdo kkfn kkkk kknb kknd kknn kkno kkoa kkob kkon kkoo knaa knab knaf knan knba knbb knbn knda kndb kndd kndf kndk kndn kndo knfa knfo knkk knnb knnd knnk knob knod knok knon koab koak koan koba kobb kobk kobn kobo koda kodk kodo kofa koff kofk kofo koka kokb kokf kokk kokn koko kona kond konk kono koob kook koon kooo naaa naab naad naan naba nabf nabk nabo nada nadf nadk nafa naff nafo naka nako nan- nana nanb nand nann nano nbaa nbad nbaf nbak nbbo nbfa ndaa ndak ndao nddb nddo ndfa ndna nfaa nfda nfff nfon nkok nndb nnnn noaa noak noba nobo noda nodo noko non- nona nonn nono noo- noob nook noon nooo oafo obad obak oban obba obbo obkb obok obon odbo odda oddd odnb odon odoo ofan off- offa offo ofna ofno okak okan okka okko okna okno okok okon onab onan onda ondo onna onno onod onon ooaa ooak ooba ooda ooff oona oooo

-aaa- -abad a-dna aabaa aabba aakko abaab ababa abada abaka abako abana aband abank abann abano abaon abbad abban abbod abdan abdon abfab abkoo abnak aboab aboad abobo abona abond abono abood abook aboon adaba adada adado adaka adana adano adaon addon adkan adnan adobo adodb adona afand afkan afnan afond afono akaba akabo akana akand akaoa akban akkad akobo akoda akoka akoko akona akono anaba anado anaka anana anand anban andab andad andan andno andoa andon ankaa annan anoak anoba anoda anoka anona anono anoon aodan b-dna babak baban babdo babka baboo badak badan badao baddo badna badod badoo bafan baffa bafna bakan bakka bakoa bakon banaf banak banan banba banda bandb bandn bando banfa banff banka banna banon bbook bo-bo boada boand boann boano bobak boban bobko bobok bodak bodd- bofan boffa boffo bokaa bokko