What's the regex corresponding to this DFA?
$$(00^*10^*1 ~~~ | ~~~ 10^*(10)^*110^*1)^*~~~10^*(10)^*110^*$$
This should be one representation. Not sure if it could be made simpler. The part from $($ to $|$ represents one lap in the upper cycle. The part from $|$ to $)$ represents a lap in the lower cycle. The last part represents the path from $A$ to $D$.