a-ha aaaa aaab aaac aaad aaah aaal aaar aaba aabb aabc aabd aabh aabl aaca aacb aacc aacd aach aacl aacr aada aadc aaha aahl aala aalc aald aall aara aarc aard abaa abab abac abad abal abar abb- abba abbb abbr abca abcb abcc abcd abch abcl abcr abda abha abhr abla abra abrc acaa acab acac acad acar acba acbl acca accc accd acch acda acdb acdc acha achh achl achr acla aclc aclr acr- acra acrc acrr adaa adab adac adad adah adal adar adba adbc adcc adda addc addd addl addr adha adhd adra ahab ahac ahad ahah ahal ahar ahdl ahha ahla ahra ahrc ahrr alaa alac alad alal alar alb- alba albc alca alcc ald- alda aldl alha all- alla allh alll allr arab arac arad arah aral arar arba arbh arc- arca arch arda ardc ardl arh- arla arr- arra arrc arrh arrr baaa baad baah baal baar baba babb babr bac- baca bacc bach bada badb badd badh badr baha bahl bahr bala balc bald ball bar- bara barb barc bard barh barr bbad bbbb bbch bbdd bblb bbrc bcaa bcar bcbc bcca bccc bccl bcda bchd bcra bd-r bdbc bddc bddh bhar bhca bhcc bhdl bhra blaa blab blac blad blah bldc bldr blrc brab brac brad brah brca brcb brda brrr c-cd caaa caab caac caah caal caba cac- caca cacc cach cacr cada cadc cadd cadr caha cahl cala calc cald call cara carb carc card carl carr cbac cbal cbar cbbc cbca cbcc cbcl cbcr cbdb cbdc cbha cbhl cblb cblc cbrd cbrh cbrl ccaa ccab ccac ccad ccar ccba ccbc ccca cccb cccc cccl ccdc ccdh ccdr ccha cchl cchr ccla cclc ccra ccrc ccrl cd-r cdaa cdac cdad cdba cdda cddb cddl cddr chaa chab chac chad chah chal char chca chch chha chlc chlr chra chrb chrc chrd chrr clab clad clar clcd cldc cldr clra clrd crab crac crar crbc crca crcc crcr crda crdc daab daad daal daar daba dabb daca dada daha dahl dala dall dara darb darc dard darl darr dbar dbcc dcbc dcca dccb dccc dccl dcdb dcra dddd ddlc ddrc dhaa dhad dhal dhar dlab dlbd dlha draa drab drac drad drar drba drbc drca drda drra haab haad haal haar haba hada hadh hadl haha hal- hala halb hald hall hara harc hard harh harl harr hbar hbcd hcbc hcca hccb hccc hcch hcdr hcrd hdca hdda hdra hhaa hhcl hhhh hhla hlah hrac hrad hrbl hrdc hrrc laaa laac laad laal laar laba labr laca lacc lach lacl lada ladd laha lahr lala lald lall lara larb larc lard larr lbar lbcc lblr lcac lcad lcbc lcca lccc lcdd lcdr lchc lchr lcra lcrd lcrl ldha lhhh llcc lldb lldc lllc llll lrac lral lrba lrdd lrrc lrrr raab raad raba rabb rabl rac- raca racc rach rada radc radd radh radl radr raha rahl rahr rala ralb rall rara rarb rbbb rbbr rbcl rcac rcbc rccb rccc rcdc rchb rcrd rdac rlab rrad rrah rrrr