C312312111133131212111133133313231333133313331333132313231333133313221323121   >>    C31231211113313121211113313331323133313331333133313231323133313331322132312   <<    C312312111133131212111133133313231333133313331333132313231333133313221323123   >>      C312312111133131212111133133313231333133313331333132313231333133313221323122   >>