B3311331313231311331322331333132313331322331323133313311231233132311321   >>    B331133131323131133132233133313231333132233132313331331123123313231132   <<    B3311331313231311331322331333132313331322331323133313311231233132311323   >>      B3311331313231311331322331333132313331322331323133313311231233132311322   >>