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