Example 13. The seventh at the middle of an interruption-structure from $\stackrel{ˆ}{3}$:
a) the seventh as a true upper neighbor to $\stackrel{ˆ}{3}$ cancels the interruption;
b) the seventh as an offshoot from V$\stackrel{ˆ}{2}$ left unexplained;
c) the seventh as a descending interruption-fill from a cover tone before $\stackrel{ˆ}{3}$;
d) the seventh as a descending interruption-fill from a cover tone before $\stackrel{ˆ}{5}$, paradoxically combined with the ascending interruption-fill