If not, the coefficient and block indices are incremented , the block 1230 is re entered, and {TAIL ~ the loop} 1280 is continued until all vectors have been subjected to {HEAD ~ the thresholding procedure} 
If not , the coefficient and block indices are incremented , the block 1230 is re entered , and { TAIL ~ the loop } 1280 is continued until all vectors have been subjected to { HEAD ~ the thresholding procedure }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD