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