B3311331313231311331322331333132333133313231332113313331333132322121133112311   >>    B331133131323131133132233133313233313331323133211331333133313232212113311231   <<    B3311331313231311331322331333132333133313231332113313331333132322121133112313   >>      B3311331313231311331322331333132333133313231332113313331333132322121133112312   >>