C111123313331323113313331323133313331333132331112111133131121231   >>    C11112331333132311331333132313331333133313233111211113313112123   <<    C111123313331323113313331323133313331333132331112111133131121233   >>      C111123313331323113313331323133313331333132331112111133131121232   >>