B3311331313231311331322331333132313331322331323133313331313132313233231221   >>    B331133131323131133132233133313231333132233132313331333131313231323323122   <<    B3311331313231311331322331333132313331322331323133313331313132313233231223   >>      B3311331313231311331322331333132313331322331323133313331313132313233231222   >>