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