L
u
a
u
L
L
L
a
a
L
L
u
L
a
L
L
u
a
a
L
L
u
u
u
L
a
u
a
L
a
L
L
u
u
a
a
u
u
u
a
a
L
L
a
u
u
u
a
a
a