-aaa- aabaa aabba aabra aarau aarna abaab ababa ababu abana abann abara abarn abaru abban abbar abbur abnub abran abrar abrun abuna abura aburn aburr anaba anana anara anaru anaua anaun anban anbar annan annar annua annur anura ar-ab arab- araba arana arara araru arbab arbar arnan arnar arran arrau arrua aruaa aruba aruna arura aruru aubun aurar aurra baarn baban babar babau babra babur banan banar banau banba banna bannu banur baraa barab baran barar barba barbu barna barra barru barua barun baura bauru brana brann braun 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 naran narau narra narun narur naura nauru nu-nu nuabu nubar nubra nunan nunna nunun nurar nurra nurun ra-ra raaba rabab raban rabba rabun ranau ranna rannu ranua rauna ruana rubab ruban rubba rubra runan ruran unara unaru unban unnau unnun unnur unrar unrra unrun unurn uraan uraba uran- urana urban urbar uruan urubu uuuuu