has been classifying

• present perfect progressive

  present perfect progressive

  Used to describe an action that began in the past, has continued continuously, and is still in progress.

  of classify (3rd person singular).
  classify

  verb (used with object)

  to arrange or organize by classes; order according to class.

Related Words

• allocate
• analyze
• arrange
• distribute
• divide
• label
• organize
• segregate