a-ha aaaa aaab aaac aaah aaar aaba aabb aabc aabh aaca aacb aacc aach aacr aacu aagh aaha aara aarc aaru abaa abab abac abag abar abau abb- abba abbb abbr abca abcb abcc abch abcr abha abhr abra abrc abua abug acaa acab acac acag acar acba acca accc acch accu acga acgr acha achh achr achu acr- acra acrc acrr acu- acur agac agag agar agau agba agca agcc agga aggu agha agra agua agur ahab ahac ahah ahar ahau ahha ahra ahrc ahrr ahua ahug arab arac arag arah arar arau arba arbh arc- arca arch arga argb argh arh- arr- arra arrc arrg arrh arrr arru arua arub arug auaa auca auch auga aur- aura auug baaa baah baar baba babb babr babu bac- baca bacc bach baga bagg bagh baha bahr bahu bar- bara barb barc barg barh barr baru bau- baug baur bbau bbbb bbch bbga bbrc bbrg bcaa bcar bcbc bcbg bcca bccc bcra bcru bcuc bgca bhag bhar bhca bhcc bhra bhur bhuu brab brac brag brah brau brca brcb brrr bruc brug bruh buar buba bubb bubu buca bucc buch bucu buga bugg bugh buha buhr bur- bura burb burg burh burr buru caaa caab caac caah caba cabg cabu cac- caca cacc cach cacr caga cagg cagr caha cara carb carc carr cauc cbac cbar cbbc cbca cbcc cbcr cbcu cbga cbgb cbha cbrh ccaa ccab ccac ccag ccar ccba ccbc ccca cccb cccc cccu ccga ccgc ccha cchr ccra ccrc ccrg ccuc cgac cgcc cgcg chaa chab chac chag chah char chau chca chch chgb chha chra chrb chrc chrr chua chub chug chur crab crac crag crar crau crbc crbu crca crcc crcr crub crug cuau cub- cuba cubb cuca cucc cuga cura curb curr gaar gaba gabb gabr gabu gach gaga gagg gagu gaha gara garb garg garr gaua gaub gaur gbag gc-c gcaa gcbc gccc gcrg gggg gghg ghar ghug grab grac grau grbr grcc grrr grua grub grug grur guaa guac guag guar guba gubb gubu guca guch guga gugb gugg gugh gugu guha guhr gura gurb gurg gurh gurr guru haab haag haar haba habu hag- haga hagg hagh haha hara harc harh harr haru hau- haug hbag hbar hcbc hcca hccb hccc hcch hcgh hgah hgar hggc hhaa hhgg hhhh hrac hrrc huac huah huba hubb huch hucu hugg hugh huhu hura hurr huru huub raab raag raba rabb rabu rac- raca racc rach racu raga ragg ragh ragu raha rahr rahu rara rarb raua raub rauc rbbb rbbr rbgh rcac rcbc rccb rccc rcga rcgc rchb rcrg rgba rhag rhau rhbg rhcg rhug rrah rrrr ruag ruah ruba rubb rubu ruca ruch ruga rugg rugh ruhh ruhr rura rurc ruru uabc uaca uarc uaru uaua ubac ubar ubba ubra ucar ucbc ucca ucha ucrc ucua ugab ugar ugcc ugcg ugra ugur uguu uhuh urac urau urba urca urch urga urgh urgu urra urrh urur uuuu