7. Interjection phrases

Single words morphologically tagged as INTJ usually do not project an INTJP, even when they are constituents at the clause level (IP or CP) (see Non-projecting categories).
( (IP-IMP (INTJ ¡)                                                                                                    ☜ INTJ under IP	
  (NP-SBJ (NPR Deus))
	  (NP-ACC (CL o))
	  (VB-SP conserve)
	  (PP (P para)
	      (NP (PRO$-F minha) (N consolação)))
	  (. !))
  (TYCHO BRAHE; ID A_004,13.134))

( (CP-EXL-SPE (QT ")
	      (INTJ Ai)                                        ☜ INTJ under CP
	      (WNP-1 (WD que)
		     (N cardume)
		     (PP (P de)
			 (NP (N peixe) (ADJ branco))))
	      (IP-IND (NP-SBJ *T*-1)
		      (VB-P-3S vai)
		      (ADVP (ADV ali)))
	      (. !))
  (CORDIAL-SIN; ID VPA24,10))

( (IP-MAT (CONJ e)
	  (NP-SBJ *pro*)
	  (VB-D exclamou)
	  (. :)
	  (DS –)
	  (IP-MAT-SPE (NP-VOC (INTJ Ó) (N homem))                                ☜ INTJ under NP-VOC
		      (, ,)
		      (NP-SBJ (D o) (N mundo))
		      (ET-P está)
		      (PP (P a)
			  (IP-INF (VB acabar))))
	  (. !))
  (TYCHO BRAHE; ID B_005_PSD,33.880))
However, an INTJP is brackected in the following cases:

1. Multi-word interjections
[...]
(CP-QUE-SPE (QT ")
            (IP-IND (IP-IND (INTJP (INTJ Oh)
                                   (INTJ diacho))
                            (, ,)
                            (NP-SBJ *pro*)
                            (ADVP (ADV então))
                            (VB-P-1 venho)
                            (ADVP (ADV cá)
                                  (ADV acima)))
                    (CONJP (CONJ e)
                           (IP-IND (NP-SBJ (D o)
                                           (NPR senhor))
                                           (NEG não)
                                           (NP-DAT (CL me))
                                           (VB-P-2 fica)
                                           (PP (P com)
                                               (NP (N coisa)
                                                   (Q-NEG-F nenhuma))))))
             (QT ")
             (. ?)
[...]
(CORDIAL-SIN; ID AAL46,7)

( (CP-EXL (QT ")
          (IP-IND (INTJP (INTJ Eh)
                         (INTJ pá))
                  (, ,)
                  (NP-SBJ (PRO eu))
                  (TR-P-1S tenho)
                  (ADVP (ADV lá))
                  (NP-ACC (D-UM-F uma)
                          (N armadilha))
                  (PP (P em)
                      (NP (ADJ-G tal)
                          (N banda))))
          (QT ")
          (. !))
  (CORDIAL-SIN; ID LVR29,29))
2. Words belonging to different categories used as interjections 
( (CP-EXL (INTJP (NPR Jesus))
          (, ,)
          (WNP (WD que)
               (PP (P de)
                   (NP (N bacalhau))))
          (, ,)
          (PP (P @em)
              (NP (D @aquele)
                  (N tempo)))
          (. !))
  (CORDIAL-SIN; ID VPA05,30))

( (CP-EXL (INTJ Ai)
          (, ,)
          (WNP (WD que)
               (PP (P de)
                   (NP (N sardinha))))
          (, ,)
          (INTJP (PRO$ meu)
                 (NPR Deus))
          (. !))
  (CORDIAL-SIN; ID VPA38,69))

( (IP-MAT-SPE (INTJP (ADJ Alto) (ADV lá))
	      (. !)
	      (ADVP (ADV-R mais)
		    (PP *ICH*-2))
	      (VB-P rende)
	      (NP-SBJ (D-UM-F uma))
	      (PP-2 (P d@)
		    (CP-CMP (WNP-1 (D @o) (WPRO que))
			    (IP-SUB (NP-MSR *T*-1)
				    (NP-SBJ (D-F a) (OUTRO-F outra)))))
	      (, ,))
  (TYCHO BRAHE; ID G-004,0.1111))

[...]
(IP-MAT-SPE (QT ")
	    (INTJP (ADV Ora) (D-F essa))
	    (, ,)
	    (NP-SBJ *exp*)
	    (TR-D-1 tinha)
	    (CP-THT (C que)
	            (IP-INF (SR ser)))
(. .)))
(CORDIAL-SIN; ID PAL17,9))
3. Interjections constituing separate tokens
( (INTJP (INTJ Adeus)
  (. .))
  (TYCHO BRAHE; ID A_004,09.86))

( (INTJP (INTJ Pronto)
  (. .))
  (CORDIAL-SIN; ID VPA16,27))

( (INTJP (INTJ Carago)
  (. !))
  (CORDIAL-SIN; ID PFT40,38))

( (INTJP (INTJ Oh)
  (. !))
  (CORDIAL-SIN; ID MST19,45))

( (INTJP (INTJ Rhã-rhã)
  (. .))
  (CORDIAL-SIN; ID FLF12,1))

( (INTJP (INTJ Ámen)
  (. .))
  (POST SCRIPTUM; ID PSCR0048,.24))

At the clause level, INTJ(P) may be annotated equally under IP or CP. Whenever a CP is projected, INTJ(P) is annotated under CP if it precedes a CP constituent. 
( (CP-EXL-SPE (INTJ Ai)                                                                        ☜ under CP
	      (WNP-1 (WD que)
		     (PP (P de)
			 (NP (N-P 'sáveles'))))
	      (IP-IND (NP-ACC *T*-1)
		      (VB-D-3S pilhou)
		      (NP-SBJ (D aquele)))
	      (. !))
  (CORDIAL-SIN; ID VPA38,83))

( (CP-QUE (IP-IND (INTJ Ai)                                                                ☜ under IP
		  (, ,)
		  (NP-SBJ (NPR-P vossemecês))
		  (ET-P-3P estão)
		  (PP (P @em)
		      (NP (D @o) (NPR Vau))))
	  (. ?))
  (CORDIAL-SIN; ID ALV24,40))

( (CP-EXL (IP-IND (CONJ e)
		  (NP-SBJ *pro*)
		  (ADVP (ADV depois))
		  (ET-P-3S está)
		  (ADVP (ADV ali))
		  (ADJP-PRD (VB-AN pregado))
		  (, ,)
		  (INTJ pronto))                                                    ☜ under IP
	  (. !))
  (CORDIAL-SIN; ID ALC01,85))