missing clutch fluid on 1995 zx-7

[luis33]

i own a 1995 kawasaki zx-7, which is sucking out the clutch fluid from the reservoir into somewhere, but where? i have refilled and bled the clutch a couple of times and everything seems fine until i hold the clutch lever in. when i hold the lever in the fluid just goes down all the way to empty. i have checked the lines and reservoir and no evidence of leaks. is there anyone out there who can give me a hand with this problem? i would greatly appreciate the help.