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