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