Draw the resonance structures for the following compounds. Show the electron shift using curved-arrow notation.
(a) `C_(6)H_(5)OH` (b) `C_(6)H_(5)NO_(2)` (c) `CH_(3)CH=CHCHO` (d) `C_(6)H_(5)–CHO` (e) `C_(6)H_(5)-overset(+)CH_(2)` (f) `CH_(3)CH=CHoverset(+)CH_(2)`