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Cluster Reduction
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tree
tree
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Okay!
grass
grass
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Okay!
ski
ski
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Okay!
crab
crab
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Okay!
stop
stop
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Okay!
slide
slide
Oops!
Okay!
frog
frog
Oops!
Okay!
step
step
Oops!
Okay!
break
break
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Okay!
snail
snail
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Okay!
brick
brick
Oops!
Okay!
spill
spill
Oops!
Okay!
spot
spot
Oops!
Okay!
stool
stool
Oops!
Okay!
swing
swing
Oops!
Okay!
bread
bread
Oops!
Okay!
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