Cak and the little shopper

Ive been taking Kira with me to my evening childbirth class since I am observing right now and not teaching. Last week, I was sitting at the table and Kira was busy behind me. When I turned around, I noticed the stroller was full of coke cans! Kira was busy over on the drink cart going through each can, one by one, picking out the perfect ones to add to her shopping cart. She would get two cans, bring them over, and hoist them over the stroller bar into the seat...and then head happily back for more.
She caught me watching her after she has managed to get a case or so into the stroller...and held out a can for me to see. "This?" She asks for everthing she wants to know the name of..."this?"
"Coke"
"Cak?"
"Coke"
"Cak." And with a quick nod to confirm that she knew what it was, she dropped off her latest collection and headed back for more.
From then on, every time she dropped another can into the cart it was "cak," thud, "cak," thud.
So, her latest word began...and we don't drink coke, so not a very useful word at that!