C1111233133313231133133313331333133311221123121111331311331323133313222211   >>    C111123313331323113313331333133313331122112312111133131133132313331322221   <<    C1111233133313231133133313331333133311221123121111331311331323133313222213   >>      C1111233133313231133133313331333133311221123121111331311331323133313222212   >>