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0 - |
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" ( the symbol for time) * |
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.. (the symbol for position) |
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0 " |
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0 " 1 |
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0 " 1 .. |
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0 x 0 |
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0 x 0 x " |
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0 x 0 x " x 1 |
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0 x 0 x " x 1 x .. |
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0 x 0 x " x 1 x .. x |
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0 x 0 x " x 1 x .. x |
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the symbol for infinity |
* note... the symbol for time should be resting on the line