B3311331313231311331322331333132313331323221233133313112211231211211321   >>    B331133131323131133132233133313231333132322123313331311221123121121132   <<    B3311331313231311331322331333132313331323221233133313112211231211211323   >>      B3311331313231311331322331333132313331323221233133313112211231211211322   >>