-aaa- a-a-p aabaa aabba aabra aapua aarau aarop aarup abaab ababa ababu abapo abara abaru abbar abbou abbur aboab abobo abora abrar abura aburr apapa apar- apara apoop apoor apopa apopo aporo appar appro apura ar-ab arab- araba arabo arara araru arbab arbar arbor aroab aroar aroba aroor aropa arora arpar arrau arrou arrua aruaa aruba arupa arura aruru aurar auro- auroa auror aurra baaop babar babau baboo babou babra babur baoro baraa barab barao barar barba barbu baro- baroa baroo baror barra barro barru barua baubo baura bauru bo-bo boaro bobar bobr bobup booba boora booru borau borba borbo boro- boroa boroo borou borra borro borup bouar bouba boura brobo brora brrar brrrr bubba bupap buraa burao buroo burra burro burru o-r-b oaror obaba obara obora oboro obrab ooooo opara opobo oppau oraba orapa orara orobo oropa oroua oruro ouara ouoro ourba paara paarp pabbo pabra paoro paoua papa- papar papau papop pappa pappo pappu papua para- parao parau paroa paroo parr- parra parro pauoa po-po pobra poopo poora popop poppa poppo popua popup porab porba poro- porra porro porur pouar poura pppoa proap proba probo proor prop- propp propr prora pubo- puppa puppo purau purba puro- purra purua ra-ra raaba raaor rabab rabap rabba rabor rabou rapar rapor rappa rapur raupo raupp ro-ro robab robar robbo robo- robop robor robur rooba roopa ropar rorbu rorra rouba roura rprop rraup rubab rubba rubor rubra rubup u-pop uapou uaroo ubobo upara upbar uppar upupa uraba urbar uroob urour urrao urubu uuuuu