B3311331313231311331322331333132313231333131323223313231323232131   >>    B331133131323131133132233133313231323133313132322331323132323213   <<    B3311331313231311331322331333132313231333131323223313231323232133   >>      B3311331313231311331322331333132313231333131323223313231323232132   >>