B3311331313231311331322331333132313232233132313213232212112113231   >>    B331133131323131133132233133313231323223313231321323221211211323   <<    B3311331313231311331322331333132313232233132313213232212112113233   >>      B3311331313231311331322331333132313232233132313213232212112113232   >>