B33113313132313113313223313331323133313223313231333132313232213331323121123311   >>    B3311331313231311331322331333132313331322331323133313231323221333132312112331   <<    B33113313132313113313223313331323133313223313231333132313232213331323121123313   >>      B33113313132313113313223313331323133313223313231333132313232213331323121123312   >>