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I’m setting up a sediment transport simulation with two sediment classes: one non-cohesive (NCO) and one cohesive (CO). I’m unsure if the keywords are correctly configured for a simulation with two sediment classes, particularly regarding whether each of the following keywords should have one value or two values (one for each NCO and CO):

CLASSES CRITICAL SHEAR STRESS FOR MUD DEPOSITION
LAYERS CRITICAL EROSION SHEAR STRESS OF THE MUD
LAYERS PARTHENIADES CONSTANT
LAYERS NON COHESIVE BED POROSITY.