Syllable counting - Psalm 94 as an example.

I did a little experiment in syllable counting today - going back to considering O'Connor's discussion in Hebrew Verse Structure (e.g. p35++) and Fokkelman in his detailed counting (Fokkelman, J. P., Major Poems of the Hebrew Bible, Vol II Psalms and Job 4-14 (2000)).  So I picked Psalm 119 and found verse lengths from 10 to 22 syllables. One interesting result was that part 1 added up to exactly 119 syllables - but it may have been an accident of my algorithm.  The parts also varied in length from 119 to 148 syllables.

In this most regular of poems I did not find regularity.

Here's a shorter example. (Psalm 94)

My question is simple. I divided this by mostly pairs of verses. Terrien divides it by trios. I have noted the central verse (12) where Terrien finds a double centre. Terrien's strophe lengths are between 45 and 59 - so still pretty varied.  Is there any rule?

אֵל נְקָמוֹת יְהוָה אֵל נְקָמוֹת הוֹפִיעַ	1	God of vengeance יְהוָה God of vengeance shine	12
הִנָּשֵׂא שֹׁפֵט הָאָרֶץ הָשֵׁב גְּמוּל עַל גֵּאִים	2	Lift up yourself judge of the earth return reward to the proud	15
עַד מָתַי רְשָׁעִים יְהוָה עַד מָתַי רְשָׁעִים יַעֲלֹזוּ	3	how long for the wicked יְהוָה? how long will the wicked exult?	18
יַבִּיעוּ יְדַבְּרוּ עָתָק יִתְאַמְּרוּ כָּל פֹּעֲלֵי אָוֶן	4	they bubble up they speak arrogance they promise all the works of mischief	20
עַמְּךָ יְהוָה יְדַכְּאוּ וְנַחֲלָתְךָ יְעַנּוּ	5	your people יְהוָה they crush and your inheritance they afflict	16
אַלְמָנָה וְגֵר יַהֲרֹגוּ וִיתוֹמִים יְרַצֵּחוּ	6	widow and guest they slay and orphans they murder	17
וַיֹּאמְרוּ לֹא יִרְאֶה יָּהּ וְלֹא יָבִין אֱלֹהֵי יַעֲקֹב	7	and they say Yah will not see and the God of Jacob will not discern it	19
בִּינוּ בֹּעֲרִים בָּעָם וּכְסִילִים מָתַי תַּשְׂכִּילוּ	8	Discern, consumers among the people and dullards when will you have insight?	17
הֲנֹטַע אֹזֶן הֲלֹא יִשְׁמָע אִם יֹצֵר עַיִן הֲלֹא יַבִּיט	9	the one who planted the ear will he not hear? if fashioning the eye will he not notice?	19
הֲיֹסֵר גּוֹיִם הֲלֹא יוֹכִיחַ הַמְלַמֵּד אָדָם דָּעַת	10	the one that chastens nations will he not be correct? the one who teaches a human knowledge ...	15
יְהוָה יֹדֵעַ מַחְשְׁבוֹת אָדָם כִּי הֵמָּה הָבֶל	11	יְהוָה knows the devices of a human that they are futility	15
אַשְׁרֵי הַגֶּבֶר אֲשֶׁר תְּיַסְּרֶנּוּ יָּהּ וּמִתּוֹרָתְךָ תְלַמְּדֶנּוּ	12	Happy the valiant whom you chasten Yah and from your instruction you teach them	23
לְהַשְׁקִיט לוֹ מִימֵי רָע עַד יִכָּרֶה לָרָשָׁע שָׁחַת	13	to give quiet to him from the days of evil until destruction is dug for the wicked	17
כִּי לֹא יִטֹּשׁ יְהוָה עַמּוֹ וְנַחֲלָתוֹ לֹא יַעֲזֹב	14	for יְהוָה will not abandon his people and his inheritance he will not forsake	17
כִּי עַד צֶדֶק יָשׁוּב מִשְׁפָּט וְאַחֲרָיו כָּל יִשְׁרֵי לֵב	15	for to righteousness judgment will turn and after it all the upright of heart	18
מִי יָקוּם לִי עִם מְרֵעִים מִי יִתְיַצֵּב לִי עִם פֹּעֲלֵי אָוֶן	16	who will arise for me with the evildoers who station themselves for me with the workers of mischief	19
לוּלֵי יְהוָה עֶזְרָתָה לִּי כִּמְעַט שָׁכְנָה דוּמָה נַפְשִׁי	17	unless יְהוָה was help to me insignificant my being dwelt mute	20
אִם אָמַרְתִּי מָטָה רַגְלִי חַסְדְּךָ יְהוָה יִסְעָדֵנִי	18	If I said my foot slips your mercy יְהוָה confirmed me	20
בְּרֹב שַׂרְעַפַּי בְּקִרְבִּי תַּנְחוּמֶיךָ יְשַׁעַשְׁעוּ נַפְשִׁי	19	In the many divisions within me your consolations revel my being	22
הַיְחָבְרְךָ כִּסֵּא הַוּוֹת יֹצֵר עָמָל עֲלֵי חֹק	20	Is the throne of calamities in league with you fashioning toil on a statute?	14
יָגוֹדּוּ עַל נֶפֶשׁ צַדִּיק וְדָם נָקִי יַרְשִׁיעוּ	21	they collaborate against the being of a righteous one and the blood of an innocent condemn	16
וַיְהִי יְהוָה לִי לְמִשְׂגָּב וֵאלֹהַי לְצוּר מַחְסִי	22	but יְהוָה will be for me for a retreat and my God a rock of refuge	18
וַיָּשֶׁב עֲלֵיהֶם אֶת אוֹנָם וּבְרָעָתָם יַצְמִיתֵם יַצְמִיתֵם יְהוָה אֱלֹהֵינוּ	23	and he will turn their mischief on them and in their wickedness he will annihilate them יְהוָה our God - he will annihilate them	27