SUBSTANCES
OXYGEN
WATER
PURE
SALT
IRON
COAL
Z
U
B
S
M
A
Y
W
A
T
E
R
Q
B
P
U
C
C
A
F
U
Q
B
W
I
P
O
B
L
O
F
U
N
U
E
Y
D
A
N
S
I
A
V
Z
E
O
U
S
W
Q
E
T
E
L
Z
O
G
C
K
B
I
G
X
A
O
U
X
T
Y
X
B
G
E
R
T
N
O
H
C
L
X
Y
E
U
D
Q
A
C
G
Q
F
A
O
O
C
W
I
C
U
E
I
H
R
S
P
M
E
I
D
F
Y
S
K
Z
P
E
U
T
V
E
O
E
D
U
O
H
S
I
R
O
N
S
S
B
I
Z
U
U
J
M
E
U
Q
M
