edge { arrowstyle: none; }

[ C ] { offset: 0,2; origin: B; }
[ D ] { offset: 0,2; origin: C; }
[ E ] { offset: -2,-2; origin: B; }

[ B ] <--> { end: south, 0; start: west; } [ E ]
[ C ] <--> { end: south, 0; start: west; } [ E ]
[ D ] <--> { end: south, 0; start: west; } [ E ]