Help on Advanced Sumif

Hi again...

I posted almost a month ago about a vlookup across worksheets. I finally settled on: SUMIF(INDIRECT("'"&T13&"'!b:b"),$A$1,INDIRECT("'"&T13&"'!K:K"))
where it would search a list of tab names to find a range, and in that range, add the amounts corresponding to the dates. Now, as I try to illustrate in my example, some of the tabs have more than one account on them. We used to just sum them to one account, and now I have to break them down by account. Is there a way to modify my formula to help with this?


Thanks