C11112331312111112111133133313331333133313331312111133133112111133132213112111   >>    C1111233131211111211113313331333133313331333131211113313311211113313221311211   <<    C11112331312111112111133133313331333133313331312111133133112111133132213112113   >>      C11112331312111112111133133313331333133313331312111133133112111133132213112112   >>