B33113313132313113313223313331323132313331313232233133313231323223313232212131   >>    B3311331313231311331322331333132313231333131323223313331323132322331323221213   <<    B33113313132313113313223313331323132313331313232233133313231323223313232212133   >>      B33113313132313113313223313331323132313331313232233133313231323223313232212132   >>