read regex [
["<" ("/") "3"+]|
["ಠ" "_" "ಠ"]|
["(" "T" ["_"|"."] "T" ")"]|
["(" "♥" ["_"|"."] "♥" ")"]|
["(" "-" ["_"|"."] "-" ")"]|

! May be end of brackets as well, like
!   Author (2018):
[[")"|"("] ("'"|"-"|"o") [":"|"="|"x"]]|
! May be end of xml, like
!   <b class="emp">=</b>
[["<"*|">"*] ["B"|"X"|"8"|":"|";"|"="|"x"] ("'"|"-"|"o") ["/"|"<"|"C"|"["|")"|"("|"D"|"P"|"d"|"p"|"3"|">"|"o"|"O"|"*"]]|
[["D"|">"] ("'") ":"]|

! May be end of square bracket
!   Author [2018]:
["]" ":"]|
["x" "("]|
["^" (".") "^"]|
["o" (".") "O"]|
[%\ ["{" "o" "}"|"o"|"m"] "/"]|
["*" "_" "*"]|
["." "_" "."]|
[":" ["a"|"b"|"c"|"d"|"e"|"f"|"g"|"h"|"i"|"j"|"k"|"l"|"m"|"n"|"o"|"p"|"q"|"r"|"s"|"t"|"u"|"v"|"w"|"x"|"y"|"z"|"_"|"-"]+ ":"]|
[">" "_" "<"]|
["*" "<" ":" "-" ")"]
];