Draw the bond-line structure of para-difluorobenzene

Bond-line structure of para-difluorobenzene with fluorine atoms at para positions.

Bond-line structure of para-difluorobenzene with one fluorine atom at a para position.

Bond-line structure of para-difluorobenzene with two fluorine atoms at para positions.

Bond-line structure of para-difluorobenzene with fluorine atoms at both para positions.