Methods, compounds, compositions and kits that relate to pretargeted delivery of diagnostic and therapeutic agents are disclosed. The results of each key word search become the database for searching with the next key word. The toothbrush further includes a tip portion attached to the handle portion having a plurality of bristles extending therefrom. The base portion includes at least two lugs that extend radially from a position adjacent the annular portion towards the central portion, the lugs including at least two stepped segments. After execution, an execution result of the debugging program is stored into the main memory.