B3311331313231311331322331333132313331322331323133313232332313232321   >>    B331133131323131133132233133313231333132233132313331323233231323232   <<    B3311331313231311331322331333132313331322331323133313232332313232323   >>      B3311331313231311331322331333132313331322331323133313232332313232322   >>