Portion of a shoe sole

FIG. 1 is a perspective view of a portion of a shoe sole showing my new design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a perspective view of a portion of a shoe sole showing a second embodiment of my new design;

FIG. 7 is a top plan view thereof;

FIG. 8 is a right side elevational view thereof;

FIG. 9 is a front view thereof; and,

FIG. 10 is a rear view thereof.

The uneven broken line showing of the remainder of the shoe is for illustrative purposes only and forms no part of the claimed design.