Insulation
insulation
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COLD
ENERGY
FIRE
HEAT
HOT
INSULATOR
STOVE
SUN
TRANSFER
I | Q | T | O | H | R | W | S | O |
E | N | U | F | Z | E | N | A | U |
N | U | S | M | I | F | A | V | D |
I | J | T | U | P | S | I | T | Y |
L | M | O | W | L | N | R | R | H |
T | S | V | K | T | A | F | D | E |
X | V | E | P | E | R | T | L | S |
V | U | W | P | B | T | I | O | W |
R | E | N | E | R | G | Y | C | R |
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