B3311331313231311331322331333132313331323223211113313231333131121322321   >>    B331133131323131133132233133313231333132322321111331323133313112132232   <<    B3311331313231311331322331333132313331323223211113313231333131121322323   >>      B3311331313231311331322331333132313331323223211113313231333131121322322   >>