{HEAD ~ The total number} of prefabricated braces and posts used in the configuration depends on the size of the channel, {TAIL ~ the flow modification} desired, and other considerations 
depends on
{ HEAD ~ The total number } of prefabricated braces and posts used in the configuration depends on the size of the channel , { TAIL ~ the flow modification } desired , and other considerations
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH