- - Like a used blackboard eraser
- - Like chewable calcium, often
- - Like a dirty blackboard
- - Like milk of magnesia
- - Like an unerased blackboard
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- - Blackboard eraser emanation
- - School board output?
- - Classroom sneeze elicitor
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- - Blackboard eraser material
- - material in newspaper, including article from spain
- - Passed fingers over material
- - stroked soft material
- - Had a feeling that it might be material
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- - Blackboard eraser target
- - It marks a blackboard
- - Blackboard writer
- - Source of eraser dust
- - Blackboard "pen"
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- - Eras upon eras
- - It's made up of many eras
- - Several eras
- - Untold eras
- - Two or more eras (Var.)
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- - Eras upon eras
- - Time span consisting of many eras
- - Many eras
- - Years upon years
- - Several eras
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- - Eras upon eras
- - periods subdivided into eras
- - Many eras
- - Years upon years
- - Ages upon ages of time
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- - Used as a blackboard
- - Used, as a tablet
- - Opined about, in a way
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