What is the problem with this

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Your code so far

// Variable declarations
var studlyCapVaR=10;
var properCamelCase="A String";
var titleCaseOver=9000;

// Variable assignments
studylyCapVar = 10;
properCamelCase = "A String";
titleCaseOver = 9000;

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Challenge: Understanding Case Sensitivity in Variables

Link to the challenge:

The first block of three is just supposed to be declarations, the second block of three is where you make assignments to those variables.