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