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