Entering data for LT Gains, Box D &E

Hi,

I have LT gains that were reported to the IRS and  some that were not reported to the IRS (same sale). Can I just combine them and report them both together on that  sale under Box D Long-Term Covered or do I split them, part under Box D and part under Box E? If I have to split them Do I enter the Box E info below the Box D info where it says "I need to enter amounts from box 1f, 1g, or other adjustments? If so, is the "total adjustments to gain" the gain/loss amount on my 1099B vs proceeds and cost basis?

 

Thank you very much.