// which is written down by users but means special for regular expressions.

    // > There are 12 characters with special meanings:
    // > - the backslash \,
    // > - the caret ^,
    // > - the dollar sign $,
    // > - the period or dot .,
    // > - the vertical bar or pipe symbol |,
    // > - the question mark ?,
    // > - the asterisk or star *,
    // > - the plus sign +,
    // > - the opening parenthesis (,

,"kil","kinda","kiruna","klippan","knivsta","kramfors","kristianstad","kristinehamn","krokoms","kumla","kungsbacka","kungsör","kungälv","kävlinge","köping","laholm","landskrona","laxå","lekeberg","leksand","lerum","lessebo","lidingö","lidköping","lilla edets","lindesbergs","linköpings","ljungby","ljusdals","ljusnarsbergs","lomma","ludvika","luleå","lunds","lycksele","lysekil","malmö","malung-sälen","malå","mariestad","marks","markaryd","mellerud","mjölby","mora","motala","mullsjö","munkedal","mu...