B3311331313231311331322331333132313231333131323223313223313133112121   >>    B331133131323131133132233133313231323133313132322331322331313311212   <<    B3311331313231311331322331333132313231333131323223313223313133112123   >>      B3311331313231311331322331333132313231333131323223313223313133112122   >>