{HEAD ~ The module} includes {TAIL ~ two sensors} to generate movement data indicative of movement direction and orientation changes of the device 
includes
{ HEAD ~ The module } includes { TAIL ~ two sensors } to generate movement data indicative of movement direction and orientation changes of the device
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH