B3311331313231311331322331333132313331323131323223313331323133311232211   >>    B331133131323131133132233133313231333132313132322331333132313331123221   <<    B3311331313231311331322331333132313331323131323223313331323133311232213   >>      B3311331313231311331322331333132313331323131323223313331323133311232212   >>