B3311331313231311331322331333132333132311211331333132322331323131322311   >>    B331133131323131133132233133313233313231121133133313232233132313132231   <<    B3311331313231311331322331333132333132311211331333132322331323131322313   >>      B3311331313231311331322331333132333132311211331333132322331323131322312   >>