B3311331313231311331322331333132313331323331211113313231333132322331323221221   >>    B331133131323131133132233133313231333132333121111331323133313232233132322122   <<    B3311331313231311331322331333132313331323331211113313231333132322331323221223   >>      B3311331313231311331322331333132313331323331211113313231333132322331323221222   >>