B3311331313231311331322331333132313233313232233133313331322222321   >>    B331133131323131133132233133313231323331323223313331333132222232   <<    B3311331313231311331322331333132313233313232233133313331322222323   >>      B3311331313231311331322331333132313233313232233133313331322222322   >>