a-a a-b a-c aaa aab aac aah aan aao aar ab- aba abb abc abh abn abo abr ac- aca acb acc ach acn aco acr aha ahb ahc ahh ahn aho ahr an- ana anb anc anh ann ano anr aoa aob aoc aoh aon aoo aor ar- ara arb arc arh arn aro arr baa bab bac bah ban bao bar bba bbb bbc bbh bbn bbo bbr bca bcb bcc bch bcn bco bcr bha bhb bhc bhh bho bhr bna bnb bnc bnn bno bnr boa bob boc boh bon boo bor bra brb brh brn bro brr c-- caa cab cac cah can cao car cba cbb cbc cbh cbn cbo cbr cca ccb ccc cch ccn cco ccr ch- cha chb chc chh chn cho chr cn- cna cnb cnc cnh cnn cno cnr co- coa cob coc coh con coo cor cra crb crc crh crn cro crr haa hab hac hah han hao har hba hbb hbc hbh hbn hbo hbr hca hcb hcc hch hcn hco hcr hha hhb hhc hhh hhn hho hhr hna hnb hnc hnh hnn hno hoa hob hoc hoh hon hoo hor hr- hra hrb hrc hrh hrn hro hrr naa nab nac nah nan nao nar nba nbb nbc nbn nbo nbr nca ncb ncc nch ncn nco ncr nha nhb nhc nhh nhn nhr nna nnb nnc nnh nnn nno no- noa nob noc noh non noo nor nra nrb nrc nrn nro nrr oaa oab oac oah oan oao oar ob- oba obb obc obh obn obo obr oc- oca ocb occ och ocn oco ocr oha ohc ohh ohn oho ohr on- ona onb onc onh onn ono onr oo- ooa oob ooc ooh oon ooo oor or- ora orb orc orh orn oro orr ra- raa rab rac rah ran rao rar rba rbb rbc rbh rbn rbo rbr rca rcb rcc rch rcn rco rcr rh- rha rhb rhc rhh rhn rho rhr rna rnb rnc rnh rnn rno rnr roa rob roc roh ron roo ror rra rrb rrc rrh rrn rrr

-ana a-ha aaaa aaab aaac aaah aaan aaar aaba aabb aabc aabh aaca aacb aacc aach aacn aaco aacr aaha aana aaon aaoo aara aarc aaro abaa abab abac aban abar abb- abba abbb abbo abbr abca abcb abcc abch abcn abcr abha abho abhr aboa abob aboh abon aboo abor abra abrc abro acaa acab acac acan acar acba acca accc acch acco acha achh acho achr acoa acoh acon acor acr- acra acrc acro acrr ahab ahac ahah ahar ahha ahoa ahor ahra ahrc ahrr ana- anaa anab anac anah anan anao anar anba anbb anbo anca ancc anco anha anna annb anno ano- anoa anon anor anrc aoah aoba aoca aonb aono aora aorb aorn arab arac arah aran arar arba arbh arc- arca arch arco arh- arna arno aroa arob aron aroo aror arr- arra arrc arrh arro arrr baaa baah baan baar baba babb babo babr bac- baca bacc bach bacn baco baha bahn baho bahr bana banc banh bann bano banr baoh baon bar- bara barb barc barh barn baro barr bbbb bbch bbrc bcaa bcar bcbc bcca bccc bcor bcra bhan bhao bhar bhca bhcc bhor bhra bnoc bnor bnrr boab boac boan boar boba bobb bobo boca boch boco boha bohn boho bohr bona bonc bonn bono boob booc booh boon boor bor- bora borh born boro borr brab brac brah bran brao brca brcb brna brno broa brob broc broh bron broo bror brrr c-bo caaa caab caac caah caan caba cabo cac- caca cacc cach caco cacr caha cahn cana canc canh cann cano caor cara carb carc carn caro carr cbac cbar cbbc cbca cbcc cbcn cbcr cbha cbna cbrh cbrn ccaa ccab ccac ccar ccba ccbc ccbn ccca cccb cccc ccha cchr ccna ccnb ccnc ccnr ccob ccoc ccra ccrc chaa chab chac chah chan chao char chca chch chha chnb chnc chno chnr choc choh chon choo chor chra chrb chrc chrn chro chrr cnaa cnac cnbc cnco cnna cnoh cnrc cnrr coan coba cobb cobh cobo coca coch coco coha cohn coho con- cona conc conn cono coob cooh coon cor- cora corb corc corn coro corr crab crac cran crar crbc crca crcc crcr crna crob croc croh cron croo cror haab haan haar haba habo haco haha hahn haho hana hanc hann hano haon haor hara harc harh harn haro harr hbar hboc hcbc hcca hccb hccc hcch hhaa hhhh hnna hoac hoan hoar hoba hobo hoca hoch hocn hocr hoha hohn hoho hono hoon hoor hora horc horn horo horr hrac hran hrob hron hrrc naaa naab naac naan naar naba nabc nabo naca nacc nach naco naha nahr nan- nana nanb nann nano naoc naoh naor nara narc narh narn naro narr nbaa nbar nbbc nbbo nbca nbcc nbco ncaa ncac ncar ncba ncbc ncca nccc nccn nccr ncha nchc ncna ncnc ncoa ncoc ncor ncra ncrc nhcc nhnn nhon nhra nhrc nnnn noaa noac noah noba nobc nobo noch noco noha nohn noho non- nona nonn nono noo- noob noon nooo noor nor- nora norb norc norn noro norr nrab nrca nrna nroc nron nrrc oara oban obba obbo obon obor obra obrh obro ocab ocac ocan ocbc occa occc occn ocha ocna ocon ocra ocro ocrr ohan ohba ohcc ohho ohno ohob ohoh ohra ohrn onab onah onan onar onc- onca onco onha onna onno onon onor onra ooaa ooba oocr ooha ooho oona oooh oooo oora orab orac orah oran orao orar orba orbb orbo orca orch orco orna ornc orno oro- oron oror orra orro raab raan raba rabb rabo rac- raca racc rach raco raha rahn rahr rana ranc rann rano raob raoc raoh rara rarb raro rbbb rbbr rboh rcac rcbc rcbo rccb rccc rchb rcnr rcon rhoa rhob rhoc rhoh rhon rnbr rnco roab roan roar rob- roba robb robo roca rocc