C111112111133131121133133313331333133313331323133313331333133313233231312331   >>    C11111211113313112113313331333133313331333132313331333133313331323323131233   <<    C111112111133131121133133313331333133313331323133313331333133313233231312333   >>      C111112111133131121133133313331333133313331323133313331333133313233231312332   >>