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