-aaa- aabaa aabba aabra aarau aarna abaab ababa ababu abana abann abara abarn abaru abava abban abbar abbur abnub abran abrar abrun abuna abura aburn aburr anaba anana anara anaru anaua anaun anava anban anbar annan annar annua annur anura anvar anvur ar-ab arab- araba arana arara araru arava aravu arbab arbar arnan arnar arran arrau arrua aruaa aruba aruna arura aruru aruvu arvan arvar aubun aurar aurra aurva avana avara avunu baarn baava baban babar babau babra babur banan banar banau banba banna bannu banur baraa barab baran barar barba barbu barna barra barru barua barun barva baura bauru bavan bavar bavra brana brann braun brava brrar brrrr bruan bruna brunn bruun bubba bunab bunan bunar bunau bunna bunun buraa buran burn- burna burra burru burun naban nabar nabau nabba nabua nabur nanan nanbu nann- nanna nanur nanva naran narau narra narun narur narva naura nauru navan navar navur nu-nu nuabu nubar nubra nunan nunna nunun nurar nurra nurun nuvar ra-ra raaba rabab raban rabba rabun ranau ranna rannu ranua rauna ravan ravar ravna ruana rubab ruban rubba rubra runan ruran ruvan ubava unara unaru unava unban unbar unnau unnun unnur unrar unrra unrun unurn uraan uraba uran- urana urban urbar uruan urubu urvan uuuuu vaana vaara vaavu vanab vanan vanar vanna vanua vanur vanuu varab varan varna varnu varra varun varva vaura vavan vavar vavra vrana vrban