C11112331312111112111133133313331333133322131131211331333131133132223221   >>    C1111233131211111211113313331333133313332213113121133133313113313222322   <<    C11112331312111112111133133313331333133322131131211331333131133132223223   >>      C11112331312111112111133133313331333133322131131211331333131133132223222   >>