C111123313331323113313331333133313331323133113313331333131222121   >>    C11112331333132311331333133313331333132313311331333133313122212   <<    C111123313331323113313331333133313331323133113313331333131222123   >>      C111123313331323113313331333133313331323133113313331333131222122   >>