B3311331313231311331322331333132313331322331323133313331323331211111323221321   >>    B331133131323131133132233133313231333132233132313331333132333121111132322132   <<    B3311331313231311331322331333132313331322331323133313331323331211111323221323   >>      B3311331313231311331322331333132313331322331323133313331323331211111323221322   >>