South Corner                    West Corner                 North Corner             East Corner                                       

Southwest 1                       Northwest 1                Northeast 1                Southeast 1

Southwest 2                       Northwest 2                Northeast 2                Southeast 2

Southwest 3                       Northwest 3                Northeast 3                Southeast 3

Southwest 4                       Northwest 4                Northeast 4                Southeast 4

Southwest 5                       Northwest 5                Northeast 5                Southeast 5

Southwest 6                       Northwest 6                Northeast 6                Southeast 6

Southwest 7                       Northwest 7                Northeast 7                Southeast 7

Southwest 8                       Northwest 8                Northeast 8                Southeast 8

Southwest 9                       Northwest 9                Northeast 9                Southeast 9