a-a a-b a-c aaa aab aac aad aam aan aao aar ab- aba abb abc abd abm abn abo abr ac- aca acb acc acd acm acn aco acr ad- ada adb adc add adm adn ado adr ama amb amc amd amm amn amo amr an- ana anb anc and anm ann ano anr aoa aob aoc aod aom aon aoo aor ar- ara arb arc ard arm arn aro arr baa bab bac bad bam ban bao bar bba bbb bbc bbd bbm bbn bbo bbr bca bcb bcc bcd bcm bcn bco bcr bda bdb bdc bdd bdm bdo bdr bma bmb bmc bmd bmm bmn bmo bmr bna bnb bnc bnd bnn bno bnr boa bob boc bod bom bon boo bor bra brb brd brm brn bro brr c-- caa cab cac cad cam can cao car cba cbb cbc cbd cbm cbn cbo cbr cca ccb ccc ccd ccm ccn cco ccr cda cdb cdc cdd cdm cdn cdo cdr cma cmb cmc cmd cmm cmn cmo cmr cn- cna cnb cnc cnd cnm cnn cno cnr co- coa cob coc cod com con coo cor cra crb crc crd crm crn cro crr daa dab dac dad dam dan dao dar dba dbb dbc dbd dbm dbn dbo dbr dca dcb dcc dcd dcm dcn dco dcr dda ddb ddc ddd ddm ddn ddo ddr dma dmb dmc dmd dmm dmn dmo dmr dna dnb dnc dnd dnm dnn dno dnr doa dob doc dod dom don doo dor dra drb drc drd drm drn dro drr m-o m-r maa mab mac mad mam man mao mar mba mbb mbc mbd mbm mbo mbr mc- mca mcb mcc mcd mcm mcn mco mcr mda mdb mdc mdd mdm mdn mdo mdr mma mmb mmc mmd mmm mmn mmo mmr mna mnb mnc mnm mnn mno mnr moa mob moc mod mom mon moo mor mra mrb mrc mrd mrm mrn mro mrr naa nab nac nad nam nan nao nar nba nbb nbc nbd nbm nbn nbo nbr nca ncb ncc ncd ncm ncn nco ncr nda ndb ndc ndd ndm ndn ndo ndr nma nmb nmc nmd nmm nmn nmo nmr nna nnb nnc nnm nnn nno no- noa nob noc nod nom non noo nor nra nrb nrc nrd nrm nrn nro nrr oaa oab oac oad oam oan oao oar ob- oba obb obc obd obm obn obo obr oc- oca ocb occ ocd ocm ocn oco ocr oda odb odc odd odm odn odo odr om- oma omb omc omd omm omn omo omr on- ona onb onc ond onn ono onr oo- ooa oob ooc ood oom oon ooo oor or- ora orb orc ord orm orn oro orr ra- raa rab rac rad ram ran rao rar rba rbb rbc rbd rbm rbn rbo rbr rca rcb rcc rcd rcm rcn rco rcr rda rdb rdc rdd rdm rdn rdo rdr rma rmb rmc rmd rmm rmn rmo rmr rna rnb rnc rnd rnm rnn rno rnr roa rob roc rod rom ron roo ror rra rrb rrc rrd rrm rrn rrr

-ana a-do aaaa aaab aaac aaad aaam aaan aaar aaba aabb aabc aabd aabm aaca aacb aacc aacd aacm aacn aaco aacr aada aadc aama aamb aamc aamd aamn aamo aamr aana aand aaon aaoo aara aarc aard aarm aaro abaa abab abac abad abam aban abar abb- abba abbb abbo abbr abca abcb abcc abcd abcn abcr abda abdo abma abmb abmc aboa abob abod abon aboo abor abra abrc abro acaa acab acac acad acan acar acba acca accc accd accm acco acda acdb acdc acdm acma acmc acoa acod acom acon acor acr- acra acrc acrm acro acrr adaa adab adac adad adam adan adao adar adba adbc adcc adda addc addd addn addo addr adma admb admr adna adob adoc adod adon adoo ador adra adro amaa amac amad amam aman amar amb- amba ambn ambo ambr amca amcc amco amda amdo amm- amma ammo amnd amno amob amoc amod amon amoo amor amra amrc amro ana- anaa anab anac anad anam anan anao anar anba anbb anbo anca ancc anco and- anda ando andr anma anna annb anno ano- anoa anod anom anon anor anrc aoba aoca aoma aonb aono aora aorb aorn arab arac arad aram aran arar arba arc- arca arcm arco arda ardc ardm ardo arma armc armd armm armo arna arnd arno aroa arob arod arom aron aroo aror arr- arra arrc arro arrr baaa baad baam baan baar baba babb babm babo babr bac- baca bacc bacn baco bada badb badd bado badr bama bamb bamc bamm bamn bana banc band bann bano banr baon bar- bara barb barc bard barm barn baro barr bbad bbbb bbcm bbdd bbdo bbrc bcaa bcam bcar bcbc bcca bccc bccm bcda bcma bcor bcra bd-r bdbc bddc bdna bdrm bmaa bman bmdb bmoc bnoc bnor bnrr boab boac boad boan boar boba bobb bobo boca bocm boco boda bodb bodo boma bomb bona bonc bond bonn bono boob booc bood boom boon boor bor- bora bord borm born boro borr brab brac brad bram bran brao brca brcb brda brdm brdo brmc brna brno broa brob broc brod brom bron broo bror brrm brrr c-bo c-cd caaa caab caac caam caan caba cabo cac- caca cacc cacm caco cacr cada cadc cadd cadm cado cadr cama camb camc camm camo cana canc cand cann cano caod caor cara carb carc card carm carn caro carr cbac cbar cbbc cbca cbcc cbcm cbcn cbcr cbdb cbdc cbdn cbdo cbna cbnd cbrd cbrm cbrn ccaa ccab ccac ccad ccam ccar ccba ccbc ccbn ccca cccb cccc cccm ccdc ccdm ccdn ccdr ccma ccmb ccmc ccmd ccmm ccna ccnb ccnc ccnm ccnr ccob ccoc ccod ccom ccra ccrc cd-r cdaa cdac cdad cdba cdda cddb cddr cdma cdna cdnb cdnc cdom cdon cmaa cmac cmba cmbc cmcc cmda cmdb cmdr cmmb