Example 13. The seventh at the middle of an interruption-structure from :
a) the seventh as a true upper neighbor to cancels the interruption;
b) the seventh as
an offshoot from V left unexplained;
c) the seventh as a descending interruption-fill
from a cover tone before ;
d) the seventh as a descending interruption-fill from a
cover tone before , paradoxically combined with the ascending interruption-fill