B3311331313231311331322331333132313331323133211331333133313231323223311211   >>    B331133131323131133132233133313231333132313321133133313331323132322331121   <<    B3311331313231311331322331333132313331323133211331333133313231323223311213   >>      B3311331313231311331322331333132313331323133211331333133313231323223311212   >>