let x = 'a'
let x = '\\'
let x = '\''
let x = '\n'
let x = '\t'
let x = '\b'
let x = '\r'
let x = ' '
let x = '\o021'
let x = '\xAA'
let x = '\179'
let heart = '\u2665'
let smile2 = '\u{1F600}'
