C1111233133313231133133313331333133311221123121111331333131122332211   >>    C111123313331323113313331333133313331122112312111133133313112233221   <<    C1111233133313231133133313331333133311221123121111331333131122332213   >>      C1111233133313231133133313331333133311221123121111331333131122332212   >>