C312312111111331312111133133313231333131133132231333133313332313331323232233131   >>    C31231211111133131211113313331323133313113313223133313331333231333132323223313   <<    C312312111111331312111133133313231333131133132231333133313332313331323232233133   >>      C312312111111331312111133133313231333131133132231333133313332313331323232233132   >>