C1111233133313231133133313231333133313113313113313112211232322231   >>    C111123313331323113313331323133313331311331311331311221123232223   <<    C1111233133313231133133313231333133313113313113313112211232322233   >>      C1111233133313231133133313231333133313113313113313112211232322232   >>