C111123313331323113313331333133313331122112312111133133313331333131121322321   >>    C11112331333132311331333133313331333112211231211113313331333133313112132232   <<    C111123313331323113313331333133313331122112312111133133313331333131121322323   >>      C111123313331323113313331333133313331122112312111133133313331333131121322322   >>