C11111333133313232233133313331333131123313221211113313113313231333131111311   >>    C1111133313331323223313331333133313112331322121111331311331323133313111131   <<    C11111333133313232233133313331333131123313221211113313113313231333131111313   >>      C11111333133313232233133313331333131123313221211113313113313231333131111312   >>