In the present invention, by the term “the upper, lower, left or right part of one surface” is meant either of these parts of one surface of paper sheet with a document printed thereon when {HEAD ~ the document} is viewed in {TAIL ~ the right or correct direction} 
is viewed in
In the present invention , by the term “ the upper , lower , left or right part of one surface ” is meant either of these parts of one surface of paper sheet with a document printed thereon when { HEAD ~ the document } is viewed in { TAIL ~ the right or correct direction }
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