[gundog]

First two words of the second sentence broke it, for me. I never see that ABCADB pattern until it’s too late to matter.

[Lonesome in Massachussets]

Tenth word, KHCKNH, is indeed the giveaway.

[notdownwidems]

First two words of the second sentence broke it, for me. I never see that ABCADB pattern until it’s too late to matter.

Lots of guessing until I saw your post, which got me going...never heard of the author though.

[grey_whiskers]

5 leisurely min.