Display screen supporting a transitional graphical user interface

FIG. 1 is a front view of a first image of a sequence according to a first embodiment of a display screen supporting a transitional graphical user interface according to the claimed design;

FIG. 2 is a front view of a second image in the sequence of the first embodiment according to the claimed design;

FIG. 3 is a front view of a first image of a sequence according to a second embodiment of a display screen supporting a transitional graphical user interface according to the claimed design;

FIG. 4 is a front view of a second image in the sequence of the second embodiment according to the claimed design;

FIG. 5 is a front view of a third image in the sequence of the second embodiment according to the claimed design;

FIG. 6 is a front view of a first image of a sequence according to a third embodiment of a display screen supporting a transitional graphical user interface

FIG. 7 is a front view of a second image in the sequence of the third embodiment according to the claimed design;

FIG. 8 is a front view of a third image of the sequence of the third embodiment according to the claimed design; and,

FIG. 9 is a front view of a fourth image of the sequence of the third embodiment according to the claimed design.

The longer-length broken-line showing of a display screen and the shorter-length broken line showing of elements within the graphical user interface are included for the purpose of illustrating environmental structure and form no part of the claimed design.

The appearance of the transitional image transitions between the images shown in FIGS. 1 to 2, 3 through 5, and 6 through 9 . The process or period in which one image transitions to another forms no part of the claimed design.