The use of three vertical strokes is not the only way to indicate pluralisation of a noun, just the most common way.
Often you will see the logogram or determinative repeated three times.
The single consonant sounds w and u are sometimes also used to indicate pluralisation.
Their use alongside three vertical strokes would clarify this for the reader.
Edited 1 time(s). Last edit at 14-Feb-18 18:54 by eyeofhorus33.