When stating the shortened form of a well location, there are no spaces within the series of numbers and the meridian. Leading zeroes are omitted in the spelled-out version but included when abbreviated.
Legal Subdivision 4, Section 2, Township 49, Range 6, West of the 5th Meridian
becomes
LSD 04-02-049-06W5M
You can also refer to a whole quarter section.
SE-02-049-06W5M