F3313231133131133131232322331323123231323223313132233132313331323133313133311   >>    F331323113313113313123232233132312323132322331313223313231333132313331313331   <<    F3313231133131133131232322331323123231323223313132233132313331323133313133313   >>      F3313231133131133131232322331323123231323223313132233132313331323133313133312   >>