_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .
l_ _ _ _ r b_ _ _ _ _ _ _ s n_ _ d t_ e u_ e of a w_ _ _ _ _ _ g b_ _ l t_ _ t is s_ _ _ g i_ _ o t_ e s_ _ _ s of t_ e b_ _ _ _ _ _ _ _ .
la_ _ _ r bu_ _ _ _ _ _ s ne_ d the use of a wr_ _ _ _ _ g ba_ l th_ t is sw_ _ g in_ o the si_ _ s of the bu_ _ _ _ _ _ _ .