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