tagging multiple lemmas to ambiguous words

Dear everyone,

I am currently lemmatising and POS-tagging an Old Frisian text (the elder 'Skeltanariucht' from MS Junius 49) for the Frisian Academy (Fryske Akademy), and am wondering how to cope with ambiguity: specifically, a word which could be lemmatised with two different lemma's according to how one interprets it.

An example: "tha banne" ('the ban/the summons') could be the dative case of a masculine "thi ban" or of a neuter "thet ban". This  word, "bon", appears as both masculine and neuter elsewhere in this text, so it is not possible to determine wether I have to tag the article in this example with the lemma "thet" or "thi". Ideally, in our online edition of this text, I want this word to link to both lemmata.

First I was thinking of something like <choice></choice> (which I now use for corrections with <sic> and <corr>), but maybe this is not what I want, because I want to show both lemmata, not switch views between them. I'd rather just find a way to add two lemmata in one <w>/word.

I do not have much experience with TEI, so maybe I am overlooking a very simple solution. 
Does anybody have a good solution, or maybe just some thoughts which could point me in the right direction?

Thanks!
Levi