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