St
a
xam
M
b
lelvla
p
=
le
tchings
E
of
cm ,
wz
)
blocking
i
t
a
I
pair
.
{
z
))
Wi
,
,
Crn
(
)
,
for
Nl
is
pair
mi
,
–
i
a
bloc
king
St
a
xam
M
b
lelvla
p
=
le
tchings
E
of
cm ,
wz
)
blocking
i
t
a
I
pair
.
{
z
))
Wi
,
,
Crn
(
)
,
for
Nl
is
pair
mi
,
–
i
a
bloc
king