B3311331313231311331322331333132313331322331323133313331321123223311321   >>    B331133131323131133132233133313231333132233132313331333132112322331132   <<    B3311331313231311331322331333132313331322331323133313331321123223311323   >>      B3311331313231311331322331333132313331322331323133313331321123223311322   >>