a-a a-b a-c aaa aab aac aak aam aan aao aar ab- aba abb abc abk abm abn abo abr ac- aca acb acc ack acm acn aco acr aka akb akc akk akm akn ako akr ama amb amc amk amm amn amo amr an- ana anb anc ank anm ann ano anr aoa aob aoc aok aom aon aoo aor ar- ara arb arc ark arm arn aro arr baa bab bac bak bam ban bao bar bba bbb bbc bbk bbm bbn bbo bbr bca bcb bcc bck bcm bcn bco bcr bka bkb bkc bkk bkm bkn bko bkr bma bmb bmc bmk bmm bmn bmo bmr bna bnb bnc bnk bnn bno bnr boa bob boc bok bom bon boo bor bra brb brk brm brn bro brr c-- caa cab cac cak cam can cao car cba cbb cbc cbk cbm cbn cbo cbr cca ccb ccc cck ccm ccn cco ccr cka ckb ckc ckm cko cma cmb cmc cmk cmm cmn cmo cmr cn- cna cnb cnc cnm cnn cno cnr co- coa cob coc cok com con coo cor cra crb crc crk crm crn cro crr ka- kaa kab kac kak kam kan kao kar kba kbb kbc kbk kbm kbn kbo kbr kca kcb kcc kck kcm kcn kcr kkb kkc kkk kkm kkn kkr kma kmb kmc kmk kmm kmo kn- kna knc knk knm knn kno knr koa kob koc kok kom kon koo kor kra krc krk krn kro krr m-o m-r maa mab mac mak mam man mao mar mba mbb mbc mbk mbm mbo mbr mc- mca mcb mcc mck mcm mcn mco mcr mka mkb mkc mkk mkm mkn mko mkr mma mmb mmc mmk mmm mmn mmo mmr mna mnb mnc mnk mnm mnn mno mnr moa mob moc mok mom mon moo mor mra mrb mrc mrk mrm mrn mro mrr naa nab nac nak nam nan nao nar nba nbb nbc nbk nbm nbn nbo nbr nca ncb ncc nck ncm ncn nco ncr nka nkc nkk nkm nkn nko nkr nma nmb nmc nmk nmm nmn nmo nmr nna nnb nnc nnk nnm nnn nno no- noa nob noc nok nom non noo nor nra nrb nrc nrk nrm nrn nro nrr oaa oab oac oak oam oan oao oar ob- oba obb obc obk obm obn obo obr oc- oca ocb occ ock ocm ocn oco ocr oka okb okc okk oko okr om- oma omb omc omm omn omo omr on- ona onb onc onk onn ono onr oo- ooa oob ooc ook oom oon ooo oor or- ora orb orc ork orm orn oro orr ra- raa rab rac rak ram ran rao rar rba rbb rbc rbk rbm rbn rbo rbr rca rcb rcc rcm rcn rco rcr rkb rkc rkk rkm rko rma rmb rmc rmm rmn rmo rmr rna rnb rnc rnm rnn rno rnr roa rob roc rok rom ron roo ror rra rrb rrc rrk rrm rrn rrr

-ana a-ak a-ok aaaa aaab aaac aaam aaan aaar aaba aabb aabc aabm aaca aacb aacc aack aacm aacn aaco aacr aaka aama aamb aamc aamn aamo aamr aana aaon aaoo aara aarc aarm aaro abaa abab abac abak abam aban abar abb- abba abbb abbo abbr abca abcb abcc abcn abcr abma abmb abmc aboa abob abok abon aboo abor abra abrc abro acaa acab acac acan acar acba acca accc accm acco acma acmc acoa acom acon acor acr- acra acrc acrm acro acrr akaa akam akan akao akar akca akka akko akna akok akom akon akr- akra amaa amac amam aman amar amb- amba ambn ambo ambr amca amcc amco amka amm- amma ammo amno amob amoc amok amon amoo amor amra amrc amro ana- anaa anab anac anak anam anan anao anar anba anbb anbo anca ancc anco ank- anka anko anma anna annb anno ano- anoa anom anon anor anrc aoba aoca aoma aonb aono aora aorb aorn arab arac arak aram aran arar arba arc- arca arcm arco arka arko arma armc armm armo arna arnk arno aroa arob arom aron aroo aror arr- arra arrc arrk arro arrr baaa baak baam baan baar baba babb babm babo babr bac- baca bacc back bacn baco bak- baka bako bakr bama bamb bamc bamm bamn bana banc bank bann bano banr baon bar- bara barb barc bark barm barn baro barr bbbb bbcm bbrc bcaa bcam bcar bcbc bcca bccc bccm bcma bcor bcra bmaa bman bmoc bnoc bnor bnrr boab boac boak boan boar boba bobb bobo boca bock bocm boco boka bokn boko boma bomb bona bonc bonk bonn bono boob booc book boom boon boor bor- bora bork borm born boro borr brab brac brak bram bran brao brca brcb brka brkb brmc brna brno broa brob broc brok brom bron broo bror brrm brrr c-bo caaa caab caac caam caan caba cabo cac- caca cacc cack cacm caco cacr caka cama camb camc camk camm camo cana canc cank cann cano caor cara carb carc cark carm carn caro carr cbac cbar cbbc cbca cbcc cbcm cbcn cbcr cbka cbkm cbkn cbko cbkr cbna cbrm cbrn ccaa ccab ccac ccam ccar ccba ccbc ccbn ccca cccb cccc cccm cckm ccma ccmb ccmc ccmm ccna ccnb ccnc ccnm ccnr ccob ccoc ccom ccra ccrc ckac ckan ckbc ckck ckcm ckco ckmo cknb cknc ckoa ckob ckoc ckom ckoo ckor ckrc ckrm cmaa cmac cmba cmbc cmcc cmmb cmmc cmmn cmoc cmon cmra cmrn cmrr cnaa cnac cnam cnbc cnbm cnco cnma cnna cnrc cnrr coak coan coba cobb cobo coca cock coco cok- coka coko com- coma comb comc comm como comr con- cona conc conk conn cono coob cook coom coon cor- cora corb corc cork corm corn coro corr crab crac cram cran crar crbc crca crcc crcr crkc crmb crmn crmo crna crob croc crok crom cron croo cror kaaa kaab kaak