TRIANGULATED
ARTIFICIAL
SUSPENDED
GRAVITY
NATURAL
SHELL
FRAME
RARES
Y
R
S
V
R
Y
D
O
X
N
Q
W
W
U
T
K
E
U
M
A
E
S
Y
A
P
U
O
D
G
I
L
O
S
C
R
T
R
A
I
F
W
E
U
S
F
W
K
P
I
E
O
I
R
X
A
T
K
I
O
V
U
V
E
S
S
H
E
L
L
A
C
P
V
U
A
S
J
N
D
K
V
N
B
L
W
O
O
R
U
E
I
A
D
I
M
L
Q
U
D
U
G
B
I
O
I
I
Q
E
E
A
O
G
A
R
T
I
F
I
C
I
A
L
D
R
O
N
G
D
E
X
M
B
M
K
I
X
E
U
B
A
X
T
E
G
V
P
L
A
B
M
I
T
I
I
A
I
K
A
F
V
F
A
A
E
U
A
Q
R
M
Y
A
U
K
D
O
R
O
V
I
N
O
T
R
W
L
U
B
J
F
O
A
E
A
I
H
G
