Please re-read my original statement, I left out a key word.
These are the most common set ups into 6A:
dash split 2A > 6A
6C > 6D > IAD j.2c > dash 6A.
Now after 6A you have three possible choices:
214x (optimal, basic setup)
Sekkajin (optimal, better in corner, usually whiffs or gets blocked at midscreen)
RC > combo (not optimal, I wouldn't suggest using this unless it's for the kill)