C1111233133313231133133313331333132313331333133313311211113313331   >>    C111123313331323113313331333133313231333133313331331121111331333   <<    C1111233133313231133133313331333132313331333133313311211113313333   >>      C1111233133313231133133313331333132313331333133313311211113313332   >>