67

Two Tritones are present which 'want' to resolve to the i min.

Ii halfdim7 V dom79 I minD halfdim7 G7(9) C min

A G(f) (e)D C

F G(d) (e)B C

& b b

b wwwwbb

D G C

Two Tritones

The ii halfdim7 V dom7 can move to major or minor tonality. Can function as a sequential pattern.