Very quickly review the גמרא דף ה. “היה פחות מעשרה טפחים until “אמר אביי”
Focus on the reason why a lechi or a korah will not allow one to carry in a mavui where there is no side wall of 4 tefachim at the entrance of the mavui.
Review רש”י מתיר פירצה “מתיר who gives an explanation.
Learn תוס’ “סוף
What is the point of disagreement between Rashi and Tosfos?
Learn the גמרא דף ה. “אמר אביי until “אמר אביי” (nine lines from the bottom of the Amud)
Learn תוס’ “ואי
What is the point of disagreement between Rashi and Tosfos?
Learn תוס’ “דפתח ליה בקרן זוית
What is the point of disagreement between Rashi and Tosfos?