Nuclear Lunchbox: The storyboards actually denote this cut as containing Ritsuko's lines, but the scripts moved the content to cut 332 instead. Script directions supersede storyboard directions, so this cut became obsolete.
UrsusArctos: If you look at the storyboards, you'll see that 331 is the missing number there. The cut's the same and contains her lines, it's just that the missing number was shifted to 333.