FIG. 1 is a first perspective view of a new and ornamental design for a knife;
FIG. 2 is a first side elevation view thereof;
FIG. 3 is a second side elevation view thereof;
FIG. 4 is a front elevation view thereof;
FIG. 5 is a rear elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a second perspective view thereof.