str.replace(pattern, "$2-$1") PASSED!
str.replace(pattern, "$9-$8-$7-$6-$5-$4-$3-$2-$1") PASSED!
str.replace(pattern, "$10-$1") PASSED!
str.replace(pattern, "$2-$A") PASSED!
str.replace(pattern, "$02-$01") FAILED! expected: two-one got: two2-one1
pattern.exec(str) PASSED!
pattern.exec(str) PASSED!
