aaaaba aabroo ababou abaroa abburu abobra abrafo afu-ra aourou araafa arabo- ararao araua araura arbour arbra arfara arfarf aroura arraba arroba arrour aruaru aufbau aufruf aurora baabaa baabar baarbu baaror babbar baboua babrru babura bafaro bafour baobab bar-or barara barbar barbra barbro barrou baruar baufra bauour baurua bbbbbb boabab bobara bobbar bobbau booboo borbor bororo boubou bourou bourra braura brubru bububu burbur fabao fabara fabbro fabour faraar farara farfar farofa faroff farrar foboff foobar foofoo foofur forbar forbra forfar foufou fourof fourou frafra frbroo fufuao furfur furour furrfu obubra oooooo orbaff orbara orrour raabau rababa rabuor rorbua rubarb rubbra ruboff rubro- ubauro uruara