C3123121111113313121111331333133313311211113323213331323221232321   >>    C312312111111331312111133133313331331121111332321333132322123232   <<    C3123121111113313121111331333133313311211113323213331323221232323   >>      C3123121111113313121111331333133313311211113323213331323221232322   >>