C1111233133313231133133313331333133311221123121111331333131122112322221   >>    C111123313331323113313331333133313331122112312111133133313112211232222   <<    C1111233133313231133133313331333133311221123121111331333131122112322223   >>      C1111233133313231133133313331333133311221123121111331333131122112322222   >>