i kinda noticed the no sentence thing too. if i had to i'd say 6. but then, i don't know if he spelled sentence as sentAnce on purpose do i? in which case, there is no sentAnce. And yeah, no breaks in it, and no proper structure to be a sentence. maybe i think too much? Ow, my head....
If you really ahve doubts on any of these over-looked letter things, just check the letters backwards. No confusion that way. Also works for words as a whole in tricks such as the classic: The Bird is is the word. That one looks a lot better when presented properly