The dual-bit flash memory cells of the present invention include three regions: the gate region, the first-side region, and the second-side region. The footboard of the novel tricycle can optionally be mounted on the frame in a first orientation and at least a second orientation. The invention further provides a pharmaceutical composition comprising a therapeutically effective amount of the above-defined compounds and a pharmaceutically acceptable carrier. The method includes contacting individual contact pads with corresponding pins of a probe card. This cab is characterised in that floor andor at least one side wall is constituted by an armoured plate having at least one curved zone that at least partially covers the mechanical organ or the mobility means. Anatomical landmarks may be determined intra-operatively and without access to the anatomical structure.