C3123121111331312121111331333132313331333133313331312111112233221   >>    C312312111133131212111133133313231333133313331333131211111223322   <<    C3123121111331312121111331333132313331333133313331312111112233223   >>      C3123121111331312121111331333132313331333133313331312111112233222   >>