I read somewhere that bar mitzvah and wedding invitations should not contain pesukim. If one receives a bar mitzvah or wedding invitation that contains pesukim and throws it into the garbage, has the sender transgressed lifnei evair?
I think that this article will answer your question:
Even three words in a row are considered a pasuk (see Gemara Gittin 6b). However, if the letters are improperly or incompletely formed or spelled it is permitted (Tashbeitz #2). This is the reason why printers sometimes abbreviate pasukim or combine letters like “alef” and “lamed” to form a single letter. (Although most usages of these abbreviations have nothing to do with this halacha.)
For this reason, some people print on invitations the following, “Naaleh es Yerushalayim al rosh simchaseinu,” “We will place our memories of Yerushalayim above our celebrations,” because it is not a quotation of a pasuk, although it is similar to one (Tehillim 137:5). Therefore, this is permitted.
Some authorities permit printing unnecessary pasukim if marks are placed between the words or if the words are not in a straight line. They feel that these arrangements of words are not considered pasukim (cf. Shu”t Tashbeitz #2 who disagrees). Similarly, some poskim allow printing invitations that quote words from pasukim, so long as the pasukim are broken up so that no three words are printed together. (However, it should be noted that many poskim prohibit this.)
The last paragraph would explain why the typical "Od Yeshama" pasuk is often in a curved line. I've also seen the "Kol Sasson / Kol Simcha" with spacing in between. Since it's only 2 words at a time, it would meet permissibility, too, based on that opinion.
Oz Nidbaru 7:65:2 says that one may throw invitations with Pesukim on them into the garbage, so long they are wrapped in something.