a-a a-b a-c aaa aab aac aad aah aan aar ab- aba abb abc abd abh abn abr ac- aca acb acc acd ach acn acr ad- ada adb adc add adh adn adr aha ahb ahc ahd ahh ahn ahr an- ana anb anc and anh ann anr ar- ara arb arc ard arh arn arr baa bab bac bad bah ban bar bba bbb bbc bbd bbh bbn bbr bca bcb bcc bcd bch bcn bcr bda bdb bdc bdd bdh bdr bha bhb bhc bhd bhh bhr bna bnb bnc bnd bnn bnr bra brb brd brh brn brr c-- caa cab cac cad cah can car cba cbb cbc cbd cbh cbn cbr cca ccb ccc ccd cch ccn ccr cda cdb cdc cdd cdh cdn cdr ch- cha chb chc chd chh chn chr cn- cna cnb cnc cnd cnh cnn cnr cra crb crc crd crh crn crr daa dab dac dad dah dan dar dba dbb dbc dbd dbh dbn dbr dca dcb dcc dcd dcn dcr dda ddb ddc ddd ddh ddn ddr dh- dha dhb dhc dhd dhh dhr dna dnb dnc dnd dnh dnn dnr dra drb drc drd drn drr haa hab hac had hah han har hba hbb hbc hbd hbh hbn hbr hca hcb hcc hcd hch hcn hcr hda hdb hdc hdd hdh hdn hdr hha hhb hhc hhd hhh hhn hhr hna hnb hnc hnd hnh hnn hr- hra hrb hrc hrd hrh hrn hrr naa nab nac nad nah nan nar nba nbb nbc nbd nbn nbr nca ncb ncc ncd nch ncn ncr nda ndb ndc ndd ndh ndn ndr nha nhb nhc nhd nhh nhn nhr nna nnb nnc nnh nnn nra nrb nrc nrd nrn nrr ra- raa rab rac rad rah ran rar rba rbb rbc rbd rbh rbn rbr rca rcb rcc rcd rch rcn rcr rda rdb rdc rdd rdh rdn rdr rh- rha rhb rhc rhd rhh rhn rhr rna rnb rnc rnd rnh rnn rnr rra rrb rrc rrd rrh rrn rrr

-ana a-ha aaaa aaab aaac aaad aaah aaan aaar aaba aabb aabc aabd aabh aaca aacb aacc aacd aach aacn aacr aada aadc aaha aana aand aara aarc aard abaa abab abac abad aban abar abb- abba abbb abbr abca abcb abcc abcd abch abcn abcr abda abha abhr abra abrc acaa acab acac acad acan acar acba acca accc accd acch acda acdb acdc acha achh achr acr- acra acrc acrr adaa adab adac adad adah adan adar adba adbc adcc adda addc addd addn addr adha adhd adhn adna adra ahab ahac ahad ahah ahar ahha ahra ahrc ahrr ana- anaa anab anac anad anah anan anar anba anbb anca ancc and- anda andh andr anha anna annb anrc arab arac arad arah aran arar arba arbh arc- arca arch arda ardc arh- arna arnd arr- arra arrc arrh arrr baaa baad baah baan baar baba babb babr bac- baca bacc bach bacn bada badb badd badh badr baha bahn bahr bana banc band banh bann banr bar- bara barb barc bard barh barn barr bbad bbbb bbch bbdd bbrc bcaa bcar bcbc bcca bccc bcda bchd bcra bd-r bdbc bddc bddh bdna bhan bhar bhca bhcc bhra bnrr brab brac brad brah bran brca brcb brda brna brrr c-cd caaa caab caac caah caan caba cac- caca cacc cach cacr cada cadc cadd cadr caha cahn cana canc cand canh cann cara carb carc card carn carr cbac cbar cbbc cbca cbcc cbcn cbcr cbdb cbdc cbdn cbha cbna cbnd cbrd cbrh cbrn ccaa ccab ccac ccad ccar ccba ccbc ccbn ccca cccb cccc ccdc ccdh ccdn ccdr ccha cchr ccna ccnb ccnc ccnr ccra ccrc cd-r cdaa cdac cdad cdba cdda cddb cddr cdna cdnb cdnc chaa chab chac chad chah chan char chca chch chha chnb chnc chnr chra chrb chrc chrd chrn chrr cnaa cnac cnbc cnda cndd cnna cnrc cnrr crab crac cran crar crbc crca crcc crcr crda crdc crna d-na daab daad daan daar daba dabb daca dada daha dahn dana dand dann danr dara darb darc dard darn darr dbar dbcc dbrn dcbc dcca dccb dccc dcdb dcra dddd ddrc dhaa dhad dhan dhar dhrn dnaa dnab dnac dnad dnah dnan dnrc draa drab drac drad drar drba drbc drca drda drna drnh drra haab haad haan haar haba hada hadh haha hahn hana hanc hand hann hara harc hard harh harn harr hbar hbcd hcbc hcca hccb hccc hcch hcdr hcrd hdca hdda hdra hhaa hhhh hndd hnna hrac hrad hran hrdc hrdn hrrc naaa naab naac naad naan naar naba nabc naca nacc nacd nach nada nadc nadh nadr naha nahr nan- nana nanb nand nann nara narc nard narh narn narr nbaa nbad nbar nbbc nbca nbcc nbhd ncaa ncac ncar ncba ncbc ncca nccc nccn nccr ncda ncdc ncdn ncdr ncha nchc nchd ncna ncnc ncnd ncra ncrc ndaa ndcc nddb ndna ndrc nhcc nhnn nhra nhrc nndb nnnn nrab nrca nrdc nrna nrrc nrrd raab raad raan raba rabb rac- raca racc rach rada radc radd radh radr raha rahn rahr rana ranc rand rann rara rarb rbbb rbbr rcac rcbc rccb rccc rcdc rchb rcnr rcrd rdac rdna rnbr rndc rrad rrah rrna rrrr

-aaa- -abad a-dna aaaah aaadc aaarc aabaa aabba aabra aacbc aadac aahaa aanch aandr aarah aarch aarna abaab ababa abaca abada abana abanc aband abann abara abarn abbac abbad abban abbar abcan abccc abcdb abdan abhar abrac abrad abran abrar acaca acacb acana acar- acara acard accad accra accrd acdnr achab achan achar achna acrab adaba adada adana adanc adara adarn addah addha addra adhan adhar adhhd adnan adrad adran adrar ahand ahard ahhaa ahhha ahrab ahran ahrar anaba anana anand anara anban anbar ancar ancha andab andac andad andan andar andr- andra anhad anhar annan annar anncr ar-ab ara-c arab- araba araca arach arada arana aranc arand arara arbab arbar arcan arch- archa