Rocker bearings

Afternoon strange question but would anybody have any idea how many needle bearings are in the rockers I have come to dismantle the top end and have found where the 4 rockers have snapped the bearings have come out and I have a couple which are intact but the center is loose,I’m just wondering how many could be in each one just to make sure I find them all, there Appears to be 12 in each but unsure if it is supposed to be filled completely with the bearings.Thanks in advance for any help given Chris