Null subjects are put first in the clause after conjunctions, interjections, vocatives, traces, and left-dislocated elements.

( (IP-MAT (NP-SBJ *pro*)
	  (VB-P Proponho)
	  (PP (P a@)
	      (NP (D @o) (NPR Mundo)))
	  (NP-ACC (D-UM um)
		  (PP (P d@)
		      (NP (D-P @os)
			  (ADJ-R-G-P maiores)
			  (N-P homens)
			  (PP (P de)
			      (NP (NPR Portugal))))))
	  (, ,))
  (TYCHO BRAHE; ID B_001_PSD,1.2))

( (IP-MAT (CONJ mas)                        ☜ conjunction	
          (NP-SBJ *pro*)
	  (VB-P confesso)
	  (CP-THT (C que)
		  (IP-SUB (NP-SBJ *pro*)
			  (VB-D consenti)
			  (PP (P sem)
			      (NP (N repugnância)))))
	  (. ,))
  (TYCHO BRAHE; ID A_001_PSD,07.49))

( (IP-MAT-SPE (NP-VOC (NPR Rei) (NPR Label))    ☜ vocative
	      (, ,)
	      (NP-SBJ *pro*)
	      (ADVP (ADV agora))
	      (NP-DAT (CL te))
	      (VB-D mostrei)
	      (NP-ACC (PRO$ teu) (N sonho))
	      (. .))
  (WOCHWEL; ID JAR78,.43))

[...]
(IP-MAT (NP-SBJ *pro*)
	(ADVP (ADV porém))
	(NEG não)
	(VB-P sei)
	(CP-QUE (WNP-1 (D o) (WPRO que))
	        (IP-SUB (NP-ACC *T*-1)        ☜ trace
			(NP-SBJ *pro*)
			(VB-D diziam)
[...]
(POST SCRIPTUM; ID CARDS4016,.10)

( (IP-MAT (CONJ e)                            ☜ conjunction
	  (PP-LFD (P a)                                                      ☜ left dislocated constituent
		  (NP (PRO nós)))
	  (, ,)
	  (NP-SBJ *exp*)
	  (PP (P conforme)
	      (NP (D-P os)
		  (N-P quilos)
		  (CP-REL (WNP-1 (WPRO que))
			  (IP-SUB (NP-ACC *T*-1)            ☜ trace
				  (NP-SBJ *pro*)
				  (VB-D-3P levavam)))))
	  (SR-P-3S é)
	  (CP-CLF (WPP-2 0)
		  (C que)
		  (IP-SUB (PP *T*-2)                                                        ☜ trace
                          (NP-SBJ *pro*)
			  (NP-DAT-RSP (CL nos))
			  (VB-D-3P pagavam)))
	  (. .))
    (CORDIAL-SIN; ID UNS11))