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