F3313231133131133131232322331323123231323223313132233132313331323133313232311   >>    F331323113313113313123232233132312323132322331313223313231333132313331323231   <<    F3313231133131133131232322331323123231323223313132233132313331323133313232313   >>      F3313231133131133131232322331323123231323223313132233132313331323133313232312   >>