C3123121111113313121111331333133313331333223313231333133313233313331323121   >>    C312312111111331312111133133313331333133322331323133313331323331333132312   <<    C3123121111113313121111331333133313331333223313231333133313233313331323123   >>      C3123121111113313121111331333133313331333223313231333133313233313331323122   >>