-aaa- aaaee aabaa aabba aabra abaab ababa ababe abaer abara abare abbar abear abeba abebe abeer abera abere aberr abrar aeaea aebbe ar-ab arab- araba arabe araea arara arare araxa arbab arbar arbee arber arbre areae arear arere arexx arrea baabe babar babax babee baber babra bar-x baraa barab barar barba barbe barea barer barra barre bbbee bbear be-er beara beare bebar beber bebra beebe berar berba berbe berea berra berre bre-x breba breer brera brere brrar brrrr earar ebara ebber eeeee erbaa erbar erbbe erber erear erere exera ra-ra raaba raabe rabab rabba rabbe rarae rareb raree rarer raxar rear- rebab rebar rebbe reber rebra reere rere- reree rexea rexer x-bar xarre xbxrx xebra xexex