HELDUR

HELDUR is ADVR; where it means "but", we assume there is a silent "but" or no conjunction HVAR, meaning 'where' tag as WADV.

HELDUR EN

HELDUR EN + IP-INF requires TO, so add an empty one if missing.

	  (ADVP (ADVR heldur-heldur)
		(PP (P en-en)
		    (IP-INF (TO *)
			    (VB sjá-sjá)
			    (NP-OB1 (N-A son-sonur)
				    (NP-POS (PRO-A sinn-sinn)))
			    (ADJP-SPR (ADJ-A píndan-píndur)))))

This is consistent with the English corpora:

( (IP-MAT (NP-SBJ (PRO he))
	  (MD will)
	  (DO do)
	  (NP-OB1 (Q anie) (N thing))
	  (ADVP (ADVR rather)
		(PP (P then)
		    (IP-INF (TO *)
			    (VB lose)
			    (NP-OB1 (PRO$ his) (N liveing)))))