C11112331312111112111133133313331333133313331333133313331333133313211231221221   >>    C1111233131211111211113313331333133313331333133313331333133313331321123122122   <<    C11112331312111112111133133313331333133313331333133313331333133313211231221223   >>      C11112331312111112111133133313331333133313331333133313331333133313211231221222   >>