B3311331313231311331322331333132333132332113313331333133313223313113122321   >>    B331133131323131133132233133313233313233211331333133313331322331311312232   <<    B3311331313231311331322331333132333132332113313331333133313223313113122323   >>      B3311331313231311331322331333132333132332113313331333133313223313113122322   >>