how to deny permission on mutilple objects at once

Hey

can anyone help me in writing script that how we can deny permission on mutilple objects at once

suppose there is a user A and we want to deny permission for update,delete from every table in the database. do you have nay idea please
i tried:

declare @user varchar(100)
set @user = 'A'
DENY 'SELECT, INSERT, UPDATE, DELETE' on '[' + table_schema + '].[' + table_name + ']'to @user = 'A'

go

this didnot worked can you help please

thanks a lot