B3311331313231311331322331333132313231333131323223313331323133313112131111   >>    B331133131323131133132233133313231323133313132322331333132313331311213111   <<    B3311331313231311331322331333132313231333131323223313331323133313112131113   >>      B3311331313231311331322331333132313231333131323223313331323133313112131112   >>