Revert "More typos"

This reverts commit 7f657dd22ac20d22698c53b23f0057e1a12c09b7.
Revert "Revert "More typos""

This reverts commit 99741e171bcdbf5257f81863a921a04592160b52.
Revert "Revert "Revert "More typos"""

This reverts commit 9746d71a6bed13d7918067f3e36d236a3f6d7336.
assignment 2
Assignment 2_ver2.0
Revert "Assignment 2_ver2.0"

This reverts commit 0ddda1dc655bb06a60b05e0d09d746b21d7f7870.