#9 » Day by Day
#11 » Sugar Free
#12 » Roly-Poly
#15 » Lovey-Dovey
#17 » Number Nine
#18 » I Go Crazy Because of You
#21 » Sexy Love
#30 » Cry Cry
#40 » Bo Peep Bo Peep
#82 » What's Wrong?
Girl's Day is practically a fourth generation group, they might be right on the cusp of the third generation, but they didn't impact the third generation enough to be included in a SECOND AND THIRD GENERATION girl group rate.
Orange Caramel is After School's sub-unit and I opted to leave all sub-unit material out of the rate.
miss A was included, so...
OC is beyond being a sub-unit. They're more successful than After School. If you look at the company's roster OC is mentioned separately and individually along with all their other unit groups (where-else actual sub-unit groups aren't).