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1. Not (il- is used before an l, im- before a b, m or p, ir- before an r)
   - in-, il-, ir-, un-
    
2. In, into, towards, within (il- is used before an l, im- before a b, m or p, ir- before an r)
   - in-, il-, ir-

1. I am
   "I'm a goner if this plan doesn't work"

Encyclopedia: I'm