DF-EX <*--------> G25 <-> G27
DF-EX <*----------------> G27
+ G29:
+ DF-EX <*> DFP <-> G25 <-> G27 <-> G29
+ DF-EX <*--------> G25 <-> G27 <-> G29
+ DF-EX <*----------------> G27 <-> G29
+ DF-EX <*------------------------> G29
+
DFGT:
DF-EX <*> DFP <-> DFGT
DF-EX <*--------> DFGT