B3311331313231311331322331333132313231333131323223313231333132311211112131   >>    B331133131323131133132233133313231323133313132322331323133313231121111213   <<    B3311331313231311331322331333132313231333131323223313231333132311211112133   >>      B3311331313231311331322331333132313231333131323223313231333132311211112132   >>