Note that periphrastic tenses in passive constructions are marked as follows, by distinguishing between the passive auxiliary (i.e. that immediately preceding the verbal head) which is marked as auxpass and the tense auxiliaries (the preceding ones) which are marked as aux.
potrebbe essere stato trovato
auxpass(trovato, stato)
aux(trovato, essere)
aux(trovato, potrebbe)
Treebank Statistics (UD_Italian)
This relation is universal.
2182 nodes (1%) are attached to their parents as auxpass.
2179 instances of auxpass (100%) are right-to-left (child precedes parent).
Average distance between parent and child is 1.16452795600367.
The following 6 pairs of parts of speech are connected with auxpass: VERB-AUX (2151; 99% instances), VERB-VERB (18; 1% instances), ADJ-AUX (7; 0% instances), NOUN-AUX (4; 0% instances), PRON-AUX (1; 0% instances), X-AUX (1; 0% instances).
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1 È essere VERB V Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 2 cop _ _
2 vero vero ADJ A Gender=Masc|Number=Sing 0 root _ _
3 , , PUNCT FF _ 2 punct _ _
4 tutti tutto PRON PI Gender=Masc|Number=Plur|PronType=Ind 7 nsubjpass _ _
5 possiamo potere AUX VM Mood=Ind|Number=Plur|Person=1|Tense=Pres|VerbForm=Fin 7 aux _ _
6 essere essere AUX VA VerbForm=Inf 7 auxpass _ _
7 sostituiti sostituire VERB V Gender=Masc|Number=Plur|Tense=Past|VerbForm=Part 2 parataxis _ _
8 . . PUNCT FS _ 2 punct _ _
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1 La il DET RD Definite=Def|Gender=Fem|Number=Sing|PronType=Art 2 det _ _
2 soluzione soluzione NOUN S Gender=Fem|Number=Sing 5 nsubjpass _ _
3 colloidale colloidale ADJ A Number=Sing 2 amod _ _
4 viene venire VERB V Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 5 auxpass _ _
5 estrusa estrusa VERB V Gender=Fem|Number=Sing|Tense=Past|VerbForm=Part 0 root _ _
6 ; ; PUNCT FC _ 5 punct _ _
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1 900 900 NUM N NumType=Card 0 root _ _
2 se se SCONJ CS _ 8 mark _ _
3 le il DET RD Definite=Def|Gender=Fem|Number=Plur|PronType=Art 4 det _ _
4 ricerche ricerca NOUN S Gender=Fem|Number=Plur 8 nsubjpass _ _
5 sono essere AUX VA Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 8 auxpass _ _
6 state essere VERB V Gender=Fem|Number=Plur|Tense=Past|VerbForm=Part 8 cop _ _
7 molto molto ADV B _ 8 advmod _ _
8 lunghe lungo ADJ A Gender=Fem|Number=Plur 1 advcl _ _
9 . . PUNCT FS _ 1 punct _ _