Accordingly, it is {HEAD ~ a primary object} of the present invention to provide a leapfrog filter which is so designed that the number of {TAIL ~ components} is decreased 
Accordingly , it is { HEAD ~ a primary object } of the present invention to provide a leapfrog filter which is so designed that the number of { TAIL ~ components } is decreased
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 OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH