The ornamental design for a controllever, as shown and described.
FIG. 1 is a top left perspective view of a control lever showing my new design;
FIG. 2 is a front elevation view of the control lever of FIG. 1; and
FIG. 3 is a rear elevation view of the control lever of FIG. 1.
FIG. 4 is a top plan view of the control lever of FIG. 1.
FIG. 5 is a bottom plan view of the control lever of FIG. 1.
FIG. 6 is a left elevation view of the control lever of FIG. 1; and,
FIG. 7 is a right elevation view of the control lever of FIG. 1.
The broken lines showing portions of the design in all figures is included for the purpose of illustrating environment and forms not part of the claimed design.