ij (ij ligature) with graves

Hello everybody
The Dutch language I learned at school as a second language has an i j
ligature, IJ / ij, which represents the diphtong /ɛi/.
It is common practice to mark a stressed vowel with an acute or a grave:
één, vóór, hìj̀… (Er… In fact, that’s not really a lexical stress but
rather an “emphasization”. — What’s the correct word?)
In this last word, hìj̀, I was forced to replace the ij ligature by to
separate letters ì and j̀. Is there a way to add a grave above each part
of the ligature?
If I use ij + U+0300, I get ij̀: there’s only one grave and the dots don’t
disappear.
If I use ij + U+030F, I get ij̏: the graves are not correctly positioned
and the dots are still there.
What could I do?

Thanks
Jean-François Colson
Received on Tue Jun 28 2011 - 11:18:43 CDT