The plural of the acronym CO would be COs.
(Some styles still endorse the use of the apostrophe, the plural being CO's)
The abbreviation (co.) for company would be (cos.) for companies.
Co děláš? - singular Co děláte? - plural or polite singular
Cos. is the plural, but more often used is the abbreviation for the word company instead which is Co.
Singular ; this and that Plural ; these and those
The plural of 'bunch' is bunches.The plural of 'ant' is ants.The plural of 'batch' is batches.The plural of 'day' is days.The plural of 'chimney' is chimneys.The plural of 'tomato' is tomatoes.The plural of 'umbrella' is umbrellas.The plural of 'donkey' is donkeys.The plural of 'sky' is skies.The plural of 'foot' is feet.The plural of 'show' is shows.
The plural of rose is roses. The plural possessive is roses'.
The plural for the noun loss is losses; the plural possessive is losses'.
pluralsThe word plurals is the plural of plural. As in: I answered the question about plurals to the person who didn't know that the plural of plural is plurals.
applied is does not have a plural but is apply it does have a plural.
The plural is a regular plural, attics.
pluralsThe word plurals is the plural of plural. As in: I answered the question about plurals to the person who didn't know that the plural of plural is plurals.
Singular ' He/She is Plural 'They are NB Notice they change of verb. NNB 'They is' is NOT correct English.
plural verb - were plural subject - boys The boys were hungry