. In fact
masculine form of numbers, looks more like the typical feminine form.
This situation is confusing and the best way to cope with it is practice. 
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| "ShNaYim" | ![]()  | is conjugated when used for quantifying. In other words in addition | 
| ("ShNeY") |   . | 
 is voweled with a "Shva".
Since it is difficult to pronounce "Ayin" with a "Shva", this root is
conjugated slightly differently 
than a regular root. 
This root is not a significant irregular. However, it does indeed behave 
differently.
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