On Thu, 19 Jan 2006 21:33:44 -0500, Steven Williams <[log in to unmask]>  

> voiceless--> p - t - k - k_j - k_w
> ejective/glottalized --> (p') - t' - k' - k_j' - k_w'
> aspirated --> p_h - t_h - k_h - k_j_h - k_w_h

My own notation uses:

p  t  c  k  q
p' t' c' k' q'
ph th ch kh qh

Note that this is a notation only, and says nothing about the phenetic  
values of c, k, and q, only that there are three distinct dorsal series.  
Frankly, I'd be surprised if we can say for certain what the value of the  
"c" series was. The advantages of this system are that it never needs  
complex "diacritic" sequences, and that it does so while remaining  
unambiguous. I've seen things like **gwed- in some plain ASCII discussion,  
which could be either **q'ed- or **k'ued- in my notation.

Tangentially, I also include an "x" column for the syllable-intitial sound  
commonly notated tk, dg, dhgh (or tc, t'c', thch in my notation), which  
would otherwise be the only stop-stop onset cluster in PIE, and which has  
a variety of usually complex relexes in the daughter languages, not all of  
which are consistent with a TK sequence. I personally pronounce the series  
as based on /tS)/ in my internal monolog, but I try to think in symbols  
rather than sounds most of the time.