{"x":"A+","y":"very excellent excellent"}
{"x":"A","y":"very excellent"}
{"x":"A-","y":"excellent"}
{"x":"B+","y":"almost excellent"}
{"x":"B","y":"slightly excellent"}
{"x":"B-","y":"slightly good"}
{"x":"C+","y":"slightly above average"}
{"x":"C","y":"average"}
{"x":"C-","y":"slightly below average"}
{"x":"D+","y":"kinda bad"}
{"x":"D","y":"bad"}
{"x":"D-","y":"bad"}
{"x":"F+","y":"very bad"}
{"x":"F","y":"very very bad"}
{"x":"F-","y":"very bad bad"}