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