{HEAD ~ The image generation unit} then calculates the facial configuration corresponding to the position in the string of phonemes, calculates the facial configuration, and causes {TAIL ~ the facial configuration} to be displayed on a video device 
causes
{ HEAD ~ The image generation unit } then calculates the facial configuration corresponding to the position in the string of phonemes , calculates the facial configuration , and causes { TAIL ~ the facial configuration } to be displayed on a video device
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH