"abc" "abb"
"^ab" " ab"
"test" "tes"
"abcd" "abc"
"abbb" "abb"
"abbbbbbbb" "abbbbbbb"
"a|b|c| " "def"
"lala$" "lalalalalal"
"^ab$" "abc"
"zzzz$" "zzzzzzzzzzzz "
"^bin$|^shell$" "bina"
"^bin$|^shell$" "shella"
"^bin$|^shell$" "ashell"