During class, Yokoi-san notices that there are a lot of notes going around. She looks next to her and sees that there's a lot going on with Seki-kun's desk...
"Note: Mail that does not fit the size 
regulations will not be accepted"?!
"Anmerkung: Briefe in Übergröße 
werden nicht angenommen"?!
« Attention,
"Nota: Le lettere che non rientrano
 nelle misure standard non saranno accettate"?!
"Aviso: Correspondências que não se enquadrem nos padrões de tamanho não serão aceitas"?!