A semiconductor memory device includes memory cells, a memory cell array, bit lines, source lines, word lines, and select gate lines. A linkage mechanism operably associates the upper and lower carriages together to allow coordinated movement relative to one another. It has desirable characteristics that allow it to retain its leaves in the garden landscape for an extended period of time during the normal growth season compared to most coleus varieties. A sleeve member is engageable intermediate a first end and a second end thereof with a second end of the arm member. Namely, the plurality of behavior modules permits to enable the robot to show a complicated behavior and have units thereof recombined.