B33113313132313113313223313331323132313231323131333132313331323221333132213121   >>    B3311331313231311331322331333132313231323132313133313231333132322133313221312   <<    B33113313132313113313223313331323132313231323131333132313331323221333132213123   >>      B33113313132313113313223313331323132313231323131333132313331323221333132213122   >>