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Using the point B and the point Tc, construct a line c (rule W02);
% DET: points B and Tc are not the same
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Using the point B and the point O, construct a circle k(O,C) (rule W06);
% NDG: points B and O are not the same
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Using the circle k(O,C), the line c, the point O and the point B, construct a point A (rule W05);
% NDG: line c and circle k(O,C) intersect
% DET: points B and A must be different
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Using the point A and the point B, construct a point Mc (rule W01);
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Using the point O and the point Mc, construct a line mc (rule W02);
% DET: points O and Mc are not the same
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Using the circle k(O,C) and the line mc, construct a point Nc and a point Nck (rule W04);
% NDG: line mc and circle k(O,C) intersect
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Using the point Nc and the point Tc, construct a line sc (rule W02);
% DET: points Nc and Tc are not the same
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Using the circle k(O,C), the line sc, the point O and the point Nc, construct a point C (rule W05);
% NDG: line sc and circle k(O,C) intersect
% DET: points Nc and C must be different