help with explanation please

Lewis structures shown below? (6 pts.) 6) Draw the three resonance structures for the carbonate ion (CO32) shown below: 5how now to interconvert between the structures using curved arrow mechanisms, (Do not worry about making the arrows reversible) ( 6 pts.) 7) Draw the two resonance structures for the isocyanate ion (HCNO-), and label them as major and minor contributing structures. Show how to interconvert between the two structures using a curved arrow mechanism: ( 4 pts.) Structure is: Major I Minor Structure is: Major I Minor Total: 12