B33113313132313113313223313331323133313223313231333132313132312312121   >>    B3311331313231311331322331333132313331322331323133313231313231231212   <<    B33113313132313113313223313331323133313223313231333132313132312312123   >>      B33113313132313113313223313331323133313223313231333132313132312312122   >>