B3311331313231311331322331333132313331323131323223313231121133132313232213221   >>    B331133131323131133132233133313231333132313132322331323112113313231323221322   <<    B3311331313231311331322331333132313331323131323223313231121133132313232213223   >>      B3311331313231311331322331333132313331323131323223313231121133132313232213222   >>