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