B3311331313231311331322331333132313232233131311331333132333132322331323322321   >>    B331133131323131133132233133313231323223313131133133313233313232233132332232   <<    B3311331313231311331322331333132313232233131311331333132333132322331323322323   >>      B3311331313231311331322331333132313232233131311331333132333132322331323322322   >>