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