-aaa- aabaa aabba aabra aarau abaab ababa ababu abala aball abalo abara abaru abbar abbou abbur ablur aboab abobl abobo abora abrar abrol abula abull abura aburr alaba alala alalu alaol alara albal albar albo- albor albul albur allal allar allbo allo- alloa alloo allor allra allur aloba aloor alora aluar alula alull ar-ab arab- araba arabo aralu arara araru araul arbab arbar arbol arbor arlob aroab aroar aroba arola aroll aroor arora aroul arrau arrou arrua aruaa aruba arula arulo arura aruru auala aulla aulo- aural aurar auro- auroa auror aurra baalu babar babau babol baboo babou babra babul babur balal balao balar balbo balla ballo baloo balor balou baoro baraa barab baral barao barar barba barbu barla baro- baroa baroo baror barra barro barru barua baubo baula baura bauru bball blaru bloor blorb blurb blurr bo-bo boaro bobal bobar bobla bobr bolar boll- bolla bollo bollu booba boola boora booru boral borau borba borbo borla boro- boroa boroo borou borra borro borul bouar bouba boul- boula boulo boura braal brall braul brobo broll brolo brool brora brrar brrrr brull buala bubal bubba bulao bulau bulb- bulba bull- bulla bulou bulul buraa bural burao burla burol buroo burra burro burru la-la labab labba labbu labor labou labra labro labur lalab lalar lalla lalo- lalor lalru laroo larra larru larub lauba laur- laura lauro lball loaba loara lobal lobar lobau lobbo lobo- lobor lolla lollo lolol loobu loola loora loral lorra louro lubao lubba lubla lubra lubur lulab lulal lulla lulua lulul luoba o-r-b oaror obaba obala obara obolo obora oboro obrab olala olaru ollur olour ooola ooooo oraal oraba oralb orara orbal orobo orolu oroua oruro ouara oullo ouoro oural ourba ourol ra-ra raaba raaor rabab rabal rabba rabor rabou rabul ralla rallo raoul ro-ro roall robab robar robbo robo- robor robur rolao rolla rollo rolua rooba roral rorbu rorra rouba roull roura ruala rubab rubba rubor rubra rullo rural uaroo ubobo ulala ulalu ulbra ullal ullar ulloa ullur ulula ululu uluru uolba uraba uralo urbar urlar urola uroob urour urrao urubu uuuuu