FIG. 1 is a front view of a display screen or portion thereof with a graphical user interface showing our new design;
FIG. 2 is a front view of a second embodiment thereof;
FIG. 3 is a front view of a third embodiment thereof;
FIG. 4 is a front view of a fourth embodiment thereof;
FIG. 5 is a front view of a fifth embodiment thereof;
FIG. 6 is a front view of a sixth embodiment thereof;
FIG. 7 is a front view of a seventh embodiment thereof;
FIG. 8 is a front view of an eighth embodiment thereof;
FIG. 9 is a front view of a ninth embodiment thereof;
FIG. 10 is a front view of a tenth embodiment thereof;
The outer broken lines in the Figures represent a display screen or a portion thereof, and form no part of the claimed design. The other broken lines within the Figures show portions of the graphical user interface that form no part of the claimed design.