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