Here it is
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I-Anti -Fully staggered -Lowest in energy No Dipole-very symmetrical
(II)Partially eclipsed -unsymmetrical and higher in energy than staggered but lesser than fully eclipsed form.It does not have plane of symmetry, but has C2 axis or 180 degree of rotation symmetry.
(III)Gauche-Staggered unsymmetrical with dipole and energy is higher than Anti but lower than eclipsed forms .It has
C2 axis or 180 degree of rotation symmetry.
(IV)Fully eclipsed unsymmetrical with dipole and highest in energy .It has plane of symmetry and symmetry of 180 degree of rotation.
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