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