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