B3311331313231311331322331333132313331322331323133313331321123232233131221   >>    B331133131323131133132233133313231333132233132313331333132112323223313122   <<    B3311331313231311331322331333132313331322331323133313331321123232233131223   >>      B3311331313231311331322331333132313331322331323133313331321123232233131222   >>