Common typos: hix1990cix1990chx1990chi1990chix990chix190chix199xhix1990vhix1990dhix1990fhix1990cjix1990cgix1990cyix1990cnix1990cbix1990cuix1990chox1990chux1990chkx1990ch8x1990ch9x1990chjx1990chiz1990chic1990chis1990chid1990chix2990chixq990chixw990chix1090chix1890chix1o90chix1i90chix1900chix1980chix19o0chix19i0chix1999chix199pchix199ohcix1990cihx1990chxi1990chi1x990chix9190chix1909xchix1990cxhix1990vchix1990cvhix1990dchix1990cdhix1990fchix1990cfhix1990cjhix1990chjix1990cghix1990chgix1990cyhix1990chyix1990cnhix1990chnix1990cbhix1990chbix1990cuhix1990chuix1990choix1990chiox1990chiux1990chkix1990chikx1990ch8ix1990chi8x1990ch9ix1990chi9x1990chijx1990chizx1990chixz1990chicx1990chixc1990chisx1990chixs1990chidx1990chixd1990chix21990chix12990chixq1990chix1q990chixw1990chix1w990chix10990chix19090chix18990chix19890chix1o990chix19o90chix1i990chix19i90chix19900chix19980chix199o0chix199i0chix19990chix19909chix199p0chix1990pchix1990occhix1990chhix1990chiix1990chixx1990chix11990