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