C3123121111113313121111331333133313331333132313331322331323233121   >>    C312312111111331312111133133313331333133313231333132233132323312   <<    C3123121111113313121111331333133313331333132313331322331323233123   >>      C3123121111113313121111331333133313331333132313331322331323233122   >>