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In this work we carry out an exhaustive study to find quark mass matrices inthe Standard Model~(SM), with the maximum number of texture zeros consistentwith the experimental data. We found four viable configurations of five texturezeros that adjust the quark masses, the mixing angles and the CP violationphase, with deviations below $1\sigma$ level respect to the current SM best fitvalues. One of the most important aspects of this work is an economic procedureto find the texture zeros: we resort to the weak basis transformation method,which, as we will show, exhaustively search every possible configuration. Wereport various leading order relations between the mixing angles and the quarkmasses for each case.

CKM mixings from mass matrices with five texture zeros