ssp'
xs
0
nil
sub
z
0
z
get
cons
y
ys
tp2
y
ys
ssp'
cons
y'
ws
v
cons
y'
ys'
sub
v
y'
w
ssp'
ws
w
ys'
ssp'
cons
x'
xs'
v
cons
y'
ys'
get
xs'
tp2
y'
zs
sub
v
y'
w
ssp'
cons
x'
zs
w
ys'
sub
s
v
s
w
z
sub
v
w
z
get
cons
x'
xs'
tp2
y
cons
x'
zs
get
xs'
tp2
y
zs
ssp'
2
0
0
nil
0
sub
2
get
1
cons
2
tp2
2
s
1
ORIENTED
FULL