-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