C11112331312111112111133133313331333133313331333133313331333131133132221233131   >>    C1111233131211111211113313331333133313331333133313331333133313113313222123313   <<    C11112331312111112111133133313331333133313331333133313331333131133132221233133   >>      C11112331312111112111133133313331333133313331333133313331333131133132221233132   >>