Consider the following Persian forms: 

xaridam    ‘I bought’               xaridi        ‘you (sg) bought’   

xarid         ‘he bought’             naxaridam       ‘I did not buy’

naxaridim ‘we did not buy’         namixaridand  ‘they were not buying’

mixaridid  ‘you (pl) were buying’     mixarid           ‘he was buying’

Identify the Persian forms for the following morphemes: