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