C31232233133313221211113313331333132313331333133313121111331333132311211   >>    C3123223313331322121111331333133313231333133313331312111133133313231121   <<    C31232233133313221211113313331333132313331333133313121111331333132311213   >>      C31232233133313221211113313331333132313331333133313121111331333132311212   >>