A multi-cylinder barrel internal combustion engine includes a valve actuation mechanism having generally L-shaped rockers for actuating valves in the engine. Therefore, it is possible to reduce the amount of electric charges to be supplied to the gate input capacitance by the driving unit until the charge of the gate input capacitance is completed. In transmitting the messages using the UDP protocol, SIP \u201cTo\u201d header lengths of the INVITE messages are compared in order to recognize a transmission order of the dialed digits. A side of the second shear has a strip-shaped extending portion with an end bent towards the other side of the second shear and having an engaging gear rack, which defines an escape region. The garment may be configured using specific compression fabric to provide the desired levels of compression to various regions of the torso of a person.