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X(2), X(6), X(7), X(8), X(21), X(55), X(56), X(65), X(672), X(673), X(1193), X(1220), X(4185) X(4185) = E3 on the Euler line and on X(6)X(65) E3* its isogonal conjugate, on the lines X(6)X(21) and X(2)X(65), on the Jerabek hyperbola 

K506 is a remarkable isogonal nK cubic that contains quite a few very common centers. It is a member of the class CL061. Its root X(14612) lies on the lines X99X1415, X101X514, X108X648, X109X190, etc. 
