Table:
x	y

17	3

18	12

19	17

Examine the given table and locate the cells that contain the following values:
CELL VALUE 1: '12'
CELL VALUE 2: 'primera b nacional'
CELL VALUE 3: '18'
CELL VALUE 4: 'y'
CELL VALUE 5: 'x'
CELL VALUE 6: '3'
CELL VALUE 7: '19'
Return the cell locations using the JSON format {'value': '<cell value>', 'location': (row_id, column_id)}, where both row and column id commence from 1. Use 'DOES NOT EXIST' as the location for a non-existing cell in the table.

The target cell locations are as follows:
CELL LOCATION 1: {'value': '12', 'location': (3, 2)}
CELL LOCATION 2: {'value': 'primera b nacional', 'location': 'DOES NOT EXIST'}
CELL LOCATION 3: {'value': '18', 'location': (3, 1)}
CELL LOCATION 4: {'value': 'y', 'location': (1, 2)}
CELL LOCATION 5: {'value': 'x', 'location': (1, 1)}
CELL LOCATION 6: {'value': '3', 'location': (2, 2)}
CELL LOCATION 7: {'value': '19', 'location': (4, 1)}