For most pixels, in addition to {TAIL ~ the reduction} of the values of {HEAD ~ the component colors} of the pixel , the alpha value of the pixel will be reduced  
For most pixels , in addition to { TAIL ~ the reduction } of the values of { HEAD ~ the component colors } of the pixel , the alpha value of the pixel will be reduced
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH