B33113313132313113313223313331323133313221211331333131133132313232112312121121   >>    B3311331313231311331322331333132313331322121133133313113313231323211231212112   <<    B33113313132313113313223313331323133313221211331333131133132313232112312121123   >>      B33113313132313113313223313331323133313221211331333131133132313232112312121122   >>