C31232233133313221211113313331333132313331322121111331311221123232311   >>    C3123223313331322121111331333133313231333132212111133131122112323231   <<    C31232233133313221211113313331333132313331322121111331311221123232313   >>      C31232233133313221211113313331333132313331322121111331311221123232312   >>