a-a a-b a-c aaa aab aac aad aah aar aau ab- aba abb abc abd abh abr abu ac- aca acb acc acd ach acr acu ad- ada adb adc add adh adr adu aha ahb ahc ahd ahh ahr ahu ar- ara arb arc ard arh arr aru au- aua aub auc aud auh aur b-u baa bab bac bad bah bar bau bba bbb bbc bbd bbh bbr bbu bca bcb bcc bcd bch bcr bcu bda bdb bdc bdd bdh bdr bdu bha bhb bhc bhd bhh bhr bhu bra brb brd brh brr bru bua bub buc bud buh bur buu c-- caa cab cac cad cah car cau cba cbb cbc cbd cbh cbr cbu cca ccb ccc ccd cch ccr ccu cda cdb cdc cdd cdh cdr cdu ch- cha chb chc chd chh chr chu cra crb crc crd crh crr cru cua cub cuc cud cuh cur cuu daa dab dac dad dah dar dau dba dbb dbc dbd dbh dbr dbu dca dcb dcc dcd dcr dcu dda ddb ddc ddd ddh ddr ddu dh- dha dhb dhc dhd dhh dhr dhu dra drb drc drd drr dru dua dub duc dud duh dur haa hab hac had hah har hau hba hbb hbc hbd hbh hbr hbu hca hcb hcc hcd hch hcr hda hdb hdc hdd hdh hdr hdu hha hhb hhc hhd hhh hhr hhu hr- hra hrb hrc hrd hrh hrr hru hua hub huc hud huh hur huu ra- raa rab rac rad rah rar rau rba rbb rbc rbd rbh rbr rbu rca rcb rcc rcd rch rcr rcu rda rdb rdc rdd rdh rdr rdu rh- rha rhb rhc rhd rhh rhr rhu rra rrb rrc rrd rrh rrr rru rua rub ruc rud ruh rur ruu ua- uaa uab uac uad uah uar uau uba ubb ubc ubh ubr ubu uca ucb ucc ucd uch ucr ucu uda udb udc udd udr udu uha uhb uhc uhd uhh uhr uhu ur- ura urb urc urd urr uru uua uuc uur uuu

a-ha aaaa aaab aaac aaad aaah aaar aaba aabb aabc aabd aabh aaca aacb aacc aacd aach aacr aacu aada aadc aadu aaha aara aarc aard aaru abaa abab abac abad abar abau abb- abba abbb abbr abca abcb abcc abcd abch abcr abda abdu abha abhr abra abrc abua abud acaa acab acac acad acar acba acca accc accd acch accu acda acdb acdc acha achh achr achu acr- acra acrc acrr acu- acur adaa adab adac adad adah adar adba adbc adcc adda addc addd addr addu adha adhd adhu adra adua adub adur ahab ahac ahad ahah ahar ahau ahha ahra ahrc ahrr ahua arab arac arad arah arar arau arba arbh arc- arca arch arda ardc ardu arh- arr- arra arrc arrh arrr arru arua arub arud auaa auca auch audc audh aur- aura aurd baaa baad baah baar baba babb babr babu bac- baca bacc bach bada badb badd badh badr badu baha bahr bahu bar- bara barb barc bard barh barr baru bau- baud baur bbad bbau bbbb bbch bbdd bbrc bcaa bcar bcbc bcca bccc bcda bchd bcra bcru bcuc bd-r bdbc bddc bddh bhar bhca bhcc bhra bhur bhuu brab brac brad brah brau brca brcb brda brrr bruc brud bruh buad buar buba bubb bubu buca bucc buch bucu buda budb budd budu buha buhr bur- bura burb burd burh burr buru c-cd caaa caab caac caah caba cabu cac- caca cacc cach cacr cada cadc cadd cadr cadu caha cara carb carc card carr cauc cbac cbar cbbc cbca cbcc cbcr cbcu cbdb cbdc cbha cbrd cbrh ccaa ccab ccac ccad ccar ccba ccbc ccca cccb cccc cccu ccdc ccdh ccdr ccha cchr ccra ccrc ccuc cd-r cdaa cdac cdad cdba cdda cddb cddr chaa chab chac chad chah char chau chca chch chha chra chrb chrc chrd chrr chua chub chud chur crab crac crar crau crbc crbu crca crcc crcr crda crdc crub crud cuau cub- cuba cubb cuca cucc cuda cura curb curd curr daab daad daar daau daba dabb dabu daca dada dadu daha dahu dara darb darc dard darr daru daub daud daur dbar dbcc dcbc dcca dccb dccc dccu dcdb dcra dddd ddrc ddub dhaa dhad dhar dhau dhur draa drab drac drad drar drau drba drbc drca drda drra drua drub druu duaa duab duad duah duar dub- duba dubb dubc dubh dubu duca duch duda dudd dudu duha duhr duhu dura duru duur haab haad haar haba habu hada hadh hadu haha hara harc hard harh harr haru hau- haud hbar hbcd hcbc hcca hccb hccc hcch hcdr hcrd hdca hdda hdra hhaa hhhh hrac hrad hrdc hrrc hrud huac huah huba hubb huch hucu huda hudd hudu huhu hura hurd hurr huru huub raab raad raba rabb rabu rac- raca racc rach racu rada radc radd radh radr radu raha rahr rahu rara rarb raua raub rauc raud rbbb rbbr rcac rcbc rccb rccc rcdc rchb rcrd rdac rhau rrad rrah rrrr ruad ruah ruba rubb rubu ruca ruch ruda rudd ruhh ruhr rura rurc rurd ruru ruud uabc uaca uarc uaru uaua ubac ubar ubba ubra ubud ucad ucar ucbc ucca ucdc ucdd ucha ucrc ucua udaa udad udar udau udbc udca udra uh-d uhuh urac urad urau urba urca urch urda urdu urra urrh urur uuuu

-aaa- -abad aaaah aaadc aaarc aabaa aabba aabra aacbc aadac aahaa aarah aarau aarch abaab ababa ababu abaca abada abara abaru abbac abbad abbar abbud abbur abccc abcdb abhar abrac abrad abrar abrud abuda abura aburr acaca acacb acar- acara acard acaua accad accra accrd accub accur achab achar achau achdu achua acrab acuba acura adaba adada adara addah addha addra addur adhar adhhd adhur adrad adrar aduba ahard ahhaa ahhha ahrab ahrar ahura ahuru ar-ab ara-c arab- araba araca arach arada arara araru arbab arbar arch- archa archb archd ardab ardah ardra ardua ardud