Aa means all, every or whole. So lehaa means everywhere. With the same logic, leze means nowhere because ze means no, none or not. Ze negates nouns, where 'u' negates verbs.
You can also make these words with the third person pronoun e. An 'H' is inserted with two vowels come together, and dipthong isn't appropriate. So everything is ehaa and eze is nothing. Sometimes ehaa and eze are used for 'everyone' and 'no one' as well, but if you want to specify a group of people you can use the words emodohaa and emodoze. Emodo means person.
Always and never are formed the same way with the word kata for time. So always is katahaa and never is kataze. Kataru is now, katavo is then and katave is a farther away then.
The plural suffix -sa isn't usually needed on the -aa and -ze words because it's implied. The suffix -sai can be added to mean that the things in the group are different from each other. For example the difference between 'emodohaa' and 'emodohaasai' is 'all the people' and 'all the peoples' respectively.
Here's a handy table
|Over there||Leve||That (farther) thing||Eve||Then||Katave|