I'm having trouble with the SF6 frame data reader, bros. Please help me out.
I am trying to lab a true blockstring, that means the blockstring will NOT have any black squares in it, correct? Otherwise that black square is a gap that the opponent can reversal or otherwise do an action?

My issue is that I have a string that indeed has no black squares, but the opponent is still able to mash reversal out. I recorded the dummy doing the string to me, and I am able to reversal or hold parry out of it. But there's no black squares at any point in the string. Am I misunderstanding something?