B33113313132313113313223313331323331333131322331333132333132313233313232212131   >>    B3311331313231311331322331333132333133313132233133313233313231323331323221213   <<    B33113313132313113313223313331323331333131322331333132333132313233313232212133   >>      B33113313132313113313223313331323331333131322331333132333132313233313232212132   >>