╣╬╣╝╚║
╝╬╩╨╚╗
╠╩╗╔╦╗
╬╥╬╡╚╔
╥╞╗╩╦╞
╦╩╚╔╦═
A 4 0
D 4 5 1
D 2 5 2
D 0 1 3