Rendering loop-subscriptions

Every morning, Mr. Bowman and his dog Larabee wake up very early to deliver the mail. Larabee likes riding in the mail truck. He likes carrying the mailbag too. He likes delivering the mail and he always, always makes sure it is delivered on time. Larabee doesn?t like one thing: There is never a letter for him! Then one day, after all the mail has been delivered, Mr. Bowman reaches down into his bag and finds a letter?addressed to Larabee!