C312312111111331312111133133313331333133313231333132313331333132233311   >>    C31231211111133131211113313331333133313331323133313231333133313223331   <<    C312312111111331312111133133313331333133313231333132313331333132233313   >>      C312312111111331312111133133313331333133313231333132313331333132233312   >>