Expression 6: StartAbsoluteValue, "x" , EndAbsoluteValue equals 1 left brace, StartAbsoluteValue, "y" , EndAbsoluteValue less than or equal to 1 , right bracex=1y≤1
6
Hidden Label: left parenthesis, 1 , negative 1 , right parenthesis1,−1
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7
Hidden Label: left parenthesis, 1 , 1 , right parenthesis1,1
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8
Hidden Label: left parenthesis, negative 1 , negative 1 , right parenthesis−1,−1
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9
Hidden Label: left parenthesis, negative 1 , 1 , right parenthesis−1,1
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10
Hidden Label: left parenthesis, 1 , 0 , right parenthesis1,0
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11
Hidden Label: left parenthesis, negative 1 , 0 , right parenthesis−1,0