Notes on the strong verb chart

I've been looking at the strong verb chart and making some observations.
I'll be watching to see if these hold true. Some of these observations came about by reading Dr. Staats' rule charts. I just wanted to put them in a simple form.

The perfects follow the vowel patterns for the PAL nomenclature

Qal ("a" vowels)
Niphal ("i-a" vowel pattern)

Piel ("i-e" vowel pattern)
Pual ("u-a" vowel pattern)

Hiphil ("i-i" vowel pattern)
Hophal ("o-a" vowel pattern)

Hitpael (first syllable begins with ה and "i" vowel ands end with ת)

Imperfects have a prefix. Here are my observations:
1.)Prefix with a hireq is a Qal or a Niphal
(If the next vowel is an "a" vowel it's a Niphal anything else is Qal -note: the Hitpael also starts with hireq under the prefix, but it is pretty hard to mistake the "hit" or "yit" sound of the Hitpael)

2.)Prefix with a sheva is a Piel or a Pual
(It's pretty hard to miss the "u" vowel of the Pual or the "a" vowel of the Piel - both will double the middle radical as well)

3.)Prefix with a pathah is a Hiphil

4.)Prefix with a Qamets is a Hophal
(The next radical will have a sheva making it a closed syllable and thus a Qamets hatuph - "o" vowel)

5.)An aleph prefix is always 1cs
A nun prefix is always 1cp - note: this is in the imperfects
A yod prefix is always 3m ( with a וּ suffix it is plural)
The נה suffix is feminine plural (it could be 2nd or 3rd person)