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