C31232233133313221211113313331333132313331322121133133313231313121   >>    C3123223313331322121111331333133313231333132212113313331323131312   <<    C31232233133313221211113313331333132313331322121133133313231313123   >>      C31232233133313221211113313331333132313331322121133133313231313122   >>