B3311331313231311331322331333132313331323223211113313231331123232212321   >>    B331133131323131133132233133313231333132322321111331323133112323221232   <<    B3311331313231311331322331333132313331323223211113313231331123232212323   >>      B3311331313231311331322331333132313331323223211113313231331123232212322   >>