The ornamental design for trousers, as shown and described.
FIG. 1 is a top front perspective view of the trousers according to our new design;
FIG. 2 is an enlarged view of a portion thereof;
FIG. 3 is a front view thereof;
FIG. 4 is a rear perspective thereof;
FIG. 5 is a right view thereof, with no belt inserted in the belt loops thereof;
FIG. 6 is a front perspective view thereof, when a belt is inserted in the belt loops thereof;
FIG. 7 is a partial enlarged view of a portion of the view shown in FIG. 6;
FIG. 8 is a top view thereof, with no belt inserted in the belt loops thereof;
FIG. 9 is a rear view thereof, with no belt inserted in the belt loops thereof; and,
FIG. 10 is a left view of the trouser, with no belt inserted in the belt loops thereof.
The broken lines shown in the drawings depict portions of the trousers that forms no part of the claimed design. The broken lines showing of a belt inserted through the belt loops in FIGS. 6 and 7 depict environment and form no part of the claimed design.