sentences:  In the case of sets of similar operations with the same characters for all representations, they are presented as one column, with the number of such similar operations noted in the heading.The body of the tables contain the characters in the respective irreducible representations for each respective symmetry operation, or set of symmetry operations.The two rightmost columns indicate which irreducible representations describe the symmetry transformations of the three Cartesian coordinates ("x", "y" and "z"), rotations about those three coordinates ("Rx", "Ry" and "Rz"), and functions of the quadratic terms of the coordinates("x"2, "y"2, "z"2, "xy", "xz", and "yz").