A precursor mixture of flavorings and a food composition containing the precursor mixture of flavorings. According to the invention the tricycle vehicle includes a riding module having a front wheel, a steering assembly and a frame having a rear tube. The sinusoidal DDS output is based on a multiple of the FCW and the reference phase and thus remains locked to the reference phase, providing phase coherency even when the FCW changes to change the frequency. The pressing portion 3 has a notch 4 for setting elasticity of the pressing portion appropriately and facilitating a handling operation of a SIM card.