Draw All US State Borders (using abbrieviations)

The original work for this quiz was done by ThatOneGuy25 - all I did was change the user interface to accept only the two letter state abbreviation to cut down on the typing (hey...I'm lazy). Type the postal abbreviations of two US states that share a border, and that border will be drawn. Example: instead of typing Alabama Mississippi as in the original version, this will accept only ALMS or MSAL (no space, no dash).