It's the lower case i, m, sh, t and p that all look similar in cursive. Here in print: и, м, ш, т, п (though t and p and t have little lines above them to differentiate them, and some people are taught to put a line under sh to distinguish it. At least it's like that in Serbian.
My boss writes English cursive like this. I'm always wondering, "Is that a 'uu', 'aa', 'wi', 'ler'…?", and et cetera because they all look almost exactly the same.
