B3311331313231311331322331333132313331322331323133313331333223312111   >>    B331133131323131133132233133313231333132233132313331333133322331211   <<    B3311331313231311331322331333132313331322331323133313331333223312113   >>      B3311331313231311331322331333132313331322331323133313331333223312112   >>