C11112331312111112111133133313231333132313331333221333131133221211   >>    C1111233131211111211113313331323133313231333133322133313113322121   <<    C11112331312111112111133133313231333132313331333221333131133221213   >>      C11112331312111112111133133313231333132313331333221333131133221212   >>