Regex Tuesday Challenge - Week Eleven

Let's play golf! This challenge is to match strings where the letters are in alphabetical order - for example, abcfjz would pass, but acb would not. Whitespace should be ignored - ab c d should pass. You have to try to get the regular expression as short as possible!

To test a regular expression on the test cases below, type it into the text input. Each test case will be marked as passed or failed respectively - you are aiming to get as many test cases as you can to pass. Note that JavaScript must be enabled for this feature to work. The regex engine used is the JavaScript regex engine; it is similar to PCRE, but with a few differences.

Test cases (0/26)

abc
match
abcdefghijk
match
abdfkmnpstvxz
match
cxy
match
cdklstxy
match
bfrtw
match
a b c
match
acg jko pr
match
a z
match
v z
match
a b cdefg kl
match
uv xyz
match
ab de gh
match
x yz
match
abcdefghijklmnopqrstuvwxyz
match
abbc
no match
abcb
no match
a bcdjkrza
no match
qwerty
no match
zyxcba
no match
abcdfe
no match
ab c dfe
no match
a z a
no match
asdfg
no match
asd f g
no match
poqwoieruytjhfg
no match
Congratulations, your regex passes all the test cases! Remember to share this challenge.