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The ornamental design for a tongue brush, as shown. |
FIG. 1 is a top, end and side perspective view of a tongue brush showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is an elevational view of the side opposite that shown in FIG. 1;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is an end elevational view as seen from the left of FIG. 2; and
FIG. 6 is an elevational view of the opposite end thereof.
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