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Using the point O and the point Ma, construct a line ma (rule W02);
% DET: points O and Ma are not the same
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Using the point O and the point Mb, construct a line mb (rule W02);
% DET: points O and Mb are not the same
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Using the point Ma and the line ma, construct a line a (rule W10a);
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Using the point Mb and the line mb, construct a line b (rule W10a);
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Using the line b and the line a, construct a point C (rule W03);
% NDG: lines b and a are not parallel
% DET: lines b and a are not the same
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Using the point C and the point Ma, construct a point B (rule W01);
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Using the point Mb and the point C, construct a point A (rule W01);