Answer:
a, ex, dis, im, and un
a few examples:
affix dis:
des (expression of reversal) + corage (meaning 'courage') = discourage
discourage means to dishearten or loose confidence
affix im:
in (meaning 'not') + maculatus (meaning 'stained') = immaculate
immaculate means spotless or not dirty
affix un:
un (meaning 'not') + canny (meaning 'normal') = uncanny
uncanny means unsettling or abnormal
hope this helps:)
