"You walk and I run."
Translation:bIyIt 'ej jIqet.
Would "I walk, run and jump" be "jIyIt, jIqet 'ej jISup"? Two parts to this question - does the prefix have to be included for each verb (rather than, for example, "jIyIt, qet, Sup je"), and do lists of verbs therefore never use "je" (because there is always a subject or implied subject)?
I agree that every verb has to have a prefix and I also favor putting an 'ej between every pair of sentences, though I think we have evidence of a list of sentences with 'ej only before the final one and some klingonists definitely believe that's the more appropriate method.
However, I have no problem also putting je after a sentence that is already connected by 'ej to give an "and also" type of emphasis.
You are experiencing "typo" forgiveness. The software treats a single wrong character as a slip of the fingers and is unable to recognize that bI- is a separate meaningful syllable that should probably not be accepted as a typo. I think it will actually let you have two typos, but if you have three, it grades it as wrong. That's why it's also not catching your I/l mix up. On the other hand, leaving out a whole word does not count as a typo, so there's no forgiveness on leaving out 'ej.