a rotatable drum including a plurality of {HEAD ~ outer compartments} for {TAIL ~ the cellulose pulp} to be washed, said plurality of outer compartments defined by axial compartment walls distributed along the circumference of said rotatable drum, 
for
a rotatable drum including a plurality of { HEAD ~ outer compartments } for { TAIL ~ the cellulose pulp } to be washed , said plurality of outer compartments defined by axial compartment walls distributed along the circumference of said rotatable drum ,
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH