a-a a-b a-c aaa aab aac aag aah aar aau ab- aba abb abc abg abh abr abu ac- aca acb acc acg ach acr acu ag- aga agb agc agg agh agr agu aha ahb ahc ahg ahh ahr ahu ar- ara arb arc arg arh arr aru au- aua aub auc aug auh aur b-u baa bab bac bag bah bar bau bba bbb bbc bbg bbh bbr bbu bca bcb bcc bcg bch bcr bcu bga bgb bgc bgg bgh bgr bgu bha bhb bhc bhg bhh bhr bhu bra brb brg brh brr bru bua bub buc bug buh bur buu c-- caa cab cac cag cah car cau cba cbb cbc cbg cbh cbr cbu cca ccb ccc ccg cch ccr ccu cga cgb cgc cgg cgh cgr cgu ch- cha chb chc chg chh chr chu cra crb crc crg crh crr cru cua cub cuc cug cuh cur cuu gaa gab gac gag gah gar gau gba gbc gbg gbh gbr gbu gca gcb gcc gcg gch gcr gcu gga ggb ggc ggg ggh ggr ggu gha ghb ghc ghg ghh ghr gra grb grc grg grh grr gru gu- gua gub guc gug gur guu haa hab hac hag hah har hau hba hbb hbc hbg hbh hbr hbu hca hcb hcc hcg hch hcr hga hgb hgc hgg hgh hgr hgu hha hhb hhc hhg hhh hhr hhu hr- hra hrb hrc hrg hrh hrr hru hua hub huc hug huh hur huu ra- raa rab rac rag rah rar rau rba rbb rbc rbg rbh rbr rbu rca rcb rcc rcg rch rcr rcu rga rgb rgc rgg rgh rgr rh- rha rhb rhc rhg rhh rhr rhu rra rrb rrc rrg rrh rrr rru rua rub ruc rug ruh rur ruu ua- uaa uab uac uag uah uar uau uba ubb ubc ubg ubh ubr ubu uca ucb ucc ucg uch ucr ucu uga ugb ugc ugg ugh ugr ugu uha uhb uhc uhh uhr uhu ur- ura urb urc urg urr uru uua uuc uug uur uuu

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

-aaa- aaaah aaagh aaarc aaarg aabaa aabba aabga aabra aacbc aahaa aarah aarau aarch aargh aaugh abaab ababa ababu abaca abaga abara abaru abbac abbar abbur abccc abgah abgar abhar abrac abrar abura aburr acaca acacb acar- acara acaua acccg accra accub accur achab achar achau achua acrab acuba acura agara aggag aggar aghur aguar agura ahhaa ahhha ahrab ahrar ahura ahuru ar-ab ara-c arab- araba araca arach arara araru arbab arbar arch- archa archb argha arhar arrah arrau arrha arrua aruaa aruac aruba aruch arura aruru aucha augur aurar aurra babar babau babra babur bacab bacar bacca bacha bacu bagac bagag bagar bagga bagha baghu bagra bagru bagua bahag bahar bahau bahra bahua bahur baraa barab barac barag barar barba barbu barca barga bargh barha barra barru barua baruc bauch baugh baura bauru bhaga bhagu bhara bhaur braca bracc brach braga bragb bragg bragh brrar brrrr bruch brugg brugh bubba bucca bucha buchu bucur bugab bugac bugar