B3311331313231311331322331333132313331322121133133313231321123232321   >>    B331133131323131133132233133313231333132212113313331323132112323232   <<    B3311331313231311331322331333132313331322121133133313231321123232323   >>      B3311331313231311331322331333132313331322121133133313231321123232322   >>