User blog comment:JoshuaJSlone/Most Stable Lineups/@comment-4074115-20150312051005/@comment-131168-20150312062904

Good catches. With as long as they've been in their current forms I always think of Berryz and C-ute as groups that didn't stay whole long, but I guess the early time wasn't THAT short.

When I originally made the list I was thinking that with 50+ singles Morning Musume would make the list more than once, but nope.