x1 is the formatted address for something - (with format) starting with x2, which is an address/locality/administrative subunit/region which belongs to slightly broader address/locality/administrative subunit/region x3, which in turn itself belongs to a slightly broader address/locality/administrative subunit/region x4, \dots (etc.).
Arbitrarily many sumti slots; open-ended superclass/superset structure. Each subsequent sumti contains or possesses the previous one(s), except the first, as a node or location (or subunit) and is only slightly larger/broader than it/them. There is no fixed meaning to any given slot; they just collectively possess this 'zooming-out' property. For example: In "Cupboard under the stairs, 4, Privet Drive, Little Whinging, Surrey, England, UK, northern hemisphere, Earth", each term separated by commas would be its own separate sumti (and we could continue to widen the scope beyond Earth); note that "4" is a name and identifies a house. Postal codes or ZIP codes should be used with caution in this word - they must be inserted in the correct spot; for example, (in the U.S.) a standard ZIP code identifies (approximately) the administering post office or municipal region and, therefore, must come after a street name but usually before the city name; ZIP+4 usually identifies a subdivision of the city or service area for the local post office, so it would come after the street name but before the city name and the standard ZIP code; ZIP+4+2 is usually enough to identify a building, so it would precede the street name (but may follow the apartment number in some cases); going the other way: the first few digits identify the region of the country or type of high-level administrative subunit of the U.S. and would come somewhere after the state name or similar. Containment is not assumed to be proper, so consecutive sumti may be equivalent (for example ZIP+4+2 can be equivalent to the house/building identifier and street address, but may be strictly contain the apartment identifier). Delete x1 in order to talk of things like "Chesterfield, New Hampshire" (tcaudu2 = Chesterfield, tcaudu3 = New Hampshire); in this case, since the terbri structure of this word (after tcaudu1) is constant/symmetric wrt shift in sumti slot (indexing), it may be cleanest and most elegant to begin the bridi with the selbri. Any number of consecutive unfilled sumti slots (after tcaudu1) is technically equivalent but may be used informally in order to show that the utterer has a well-defined or standard sequence of nested classes which subdivide the subsequent sumti and which contain the previous ones. Deleting any finite number of sumti slots after the first has no nontrivial effect. See also: judri, jutsi.