C31232233133313221211113313331333131211113313231333133313121223321   >>    C3123223313331322121111331333133313121111331323133313331312122332   <<    C31232233133313221211113313331333131211113313231333133313121223323   >>      C31232233133313221211113313331333131211113313231333133313121223322   >>