The voice synthesization processing unit synthesizes the voices by, e.g., {TAIL ~ a voice rule synthesizing method} of synthesizing the voices from {HEAD ~ a character string} 
The voice synthesization processing unit synthesizes the voices by , e.g. , { TAIL ~ a voice rule synthesizing method } of synthesizing the voices from { HEAD ~ a character string }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD