ELECTRICITY
LIGHTBULB
SPACECRAFT
BATTERY
PHOTOGRAPHY
RADIO
WHEEL
STEAMENGINE
AEROPLANE
XRAY
VACCINATION
ANTIBIOTICS
V
A
C
C
I
N
A
T
I
O
N
S
E
S
V
N
G
J
E
C
N
Y
K
Z
P
Y
T
E
A
T
X
R
B
I
E
A
Y
A
I
E
U
L
I
I
U
E
Y
E
H
R
C
C
A
X
L
E
A
B
R
N
P
X
A
E
P
M
I
R
H
C
E
I
A
D
A
D
C
D
E
E
L
A
T
T
R
O
D
A
I
R
X
N
F
Z
T
Y
G
R
O
T
L
O
A
Z
G
P
A
Y
O
K
I
I
P
I
O
F
U
I
B
I
T
Y
T
K
I
C
L
C
T
I
N
B
O
G
W
L
O
X
E
I
A
S
A
E
H
W
H
E
E
L
V
D
O
T
N
E
P
L
I
G
H
T
B
U
L
B
A
Y
E
