VC is used mainly to connect clauses to various words when they act as a subordinating conjunction. It is quite similar to the MVs connector, which is used in many similar situations, however, the VC link is "tighter", in that it must always for a cycle with som other link, typically either X or CP. By contrast, the coordinating conjunctions primarily use the Xx connector.
+----------Xs---------+
+----->WV----->+ +-------CV----->+
+--Wd--+--Sp*i-+--VC--+Cs+-Sp*i+---I--+-Ox-+
| | | | | | | |
LEFT-WALL I.p stayed.v-d so I.p could.v see.v you
VC is used for coordination only, and it links
to the head-verb of the previous clause. This is consistent
with how subordinating conjunctions are linked, such as
"when" and "after". See
"W: Coordinating Conjunctions"; and also the
coordination overview.
+--VCq--+-SI-+
| | |
I would do it, were it possible
Here, VCq is used. Instead of linking to the subject of the
following clause, the VCq links to a following auxiliary
(either "had" or "were"), which is then forced to use an
"SI*j+", creating subject-verb inversion. Conditional
expressions can also be used as openers in this way: "Had you
been there, I would have seen you". For this, COp is used.
For this purpose, "had" and "were" have a special
"SI*j+ & (VCq- or COp+)" expression.
+----------------->CPu----------------->+
+----->WV----->+---VCz---+------CV----->+
+->Wd--+---Ss--+ +-Xd+-Sa*a+---Pv---+
| | | | | | |
LEFT-WALL she failed , as was hoped
Here, the CPu link connects from the left wall to the
verb expressing the desire. It forms a cycle with VCz,
although it depends on the head-verb connectors
WV and
CV to accomplish this.
The CV link in turn forms a cycle, using the unusual
Sa link to "as",
in place of the missing subject doing the hoping.