Robb in MI
||<--------------Ga 1------------->|| ||<-------------- O ---->||<--N--->||
||<--------------Ga 1------------->||<-HO->|| ||<--------------Ga 2---------------||--------->||
||<--------------Ga 1------------->|| ||<-------------- O ---->||<--N--->||
||<--------------Ga 1------------->||<-HO->|| ||<--------------Ga 2---------------||--------->||