UD coordination has a right-adjunct structure (note that this differs from the structure of the Irish Dependency Treebank). The first conjunct (conjoined element) is the head of the conjoined phrase and all other conjuncts are dependents, labelled with the conj relation.
Examples
Tigh Tábhairne agus Lóistín atá anois ann ‘A Public Bar and Hotel is what is there now’
# visual-style 5 bgColor:blue
# visual-style 5 fgColor:white
# visual-style 3 bgColor:blue
# visual-style 3 fgColor:white
# visual-style 3 5 conj color:blue
1 Thiocfadh tar VERB VI Form=Len|Mood=Cnd 0 root _ _
2 leat le ADP Prep Number=Sing|Person=2 1 nmod:prep _ _
3 caint caint NOUN Noun VerbForm=Ger 1 nsubj _ _
4 agus agus CONJ Coord _ 3 cc _ _
5 scríobh scríobh NOUN Noun VerbForm=Inf 3 conj _ _
6 fá faoi X CU Dialect=Ulster|Gender=Masc|Number=Sing|Person=3 7 case _ _
7 seo seo PRON Dem PronType=Dem 3 nmod _ _
8 go go PART Ad PartType=Ad 9 mark:prt _ _
9 minic minic ADJ Adj Degree=Pos 1 advmod _ _
10 agus agus CONJ Coord _ 9 cc _ _
11 go go PART Ad PartType=Ad 12 mark:prt _ _
12 fada fada ADJ Adj Degree=Pos 9 conj _ _
13 . . PUNCT . _ 1 punct _ _
# visual-style 6 bgColor:blue
# visual-style 6 fgColor:white
# visual-style 1 bgColor:blue
# visual-style 1 fgColor:white
# visual-style 1 6 conj color:blue
1 Bhí bí VERB PastInd Form=Len|Mood=Ind|Tense=Past 0 root _ _
2 an an DET Art Definite=Def|Number=Sing|PronType=Art 3 det _ _
3 lá lá NOUN Noun Case=Com|Definite=Def|Gender=Masc|Number=Sing 1 nsubj _ _
4 an-te te ADJ Adj Degree=Pos 1 xcomp:pred _ _
5 agus agus CONJ Coord _ 1 cc _ _
6 bhí bí VERB PastInd Form=Len|Mood=Ind|Tense=Past 1 conj _ _
7 gach gach DET Det Definite=Def 8 det _ _
8 duine duine NOUN Noun Case=Com|Gender=Masc|Number=Sing 6 nsubj _ _
9 spalptha spalptha ADJ Adj VerbForm=Part 6 xcomp:pred _ _
10 leis le ADP Simp _ 12 case _ _
11 an an DET Art Definite=Def|Number=Sing|PronType=Art 12 det _ _
12 tart tart NOUN Noun Case=Com|Definite=Def|Gender=Masc|Number=Sing 9 nmod _ _
13 . . PUNCT . _ 1 punct _ _
# visual-style 6 bgColor:blue
# visual-style 6 fgColor:white
# visual-style 4 bgColor:blue
# visual-style 4 fgColor:white
# visual-style 4 6 conj color:blue
1 Conas conas ADV Q PronType=Int 3 advmod _ _
2 a a PART Vb PartType=Vb|PronType=Rel 3 mark:prt _ _
3 chosnaíonn cosain VERB VTI Form=Len|Mood=Ind|Tense=Pres 0 root _ _
4 Beckett Beckett PROPN Noun Case=Com|Gender=Masc|Number=Sing 3 nsubj _ _
5 , , PUNCT Punct _ 6 punct _ _
6 Joyce Joyce PROPN Noun Case=Com|Gender=Masc|Number=Sing 4 conj _ _
7 ar ar ADP Simp _ 9 case _ _
8 na na DET Art Definite=Def|Number=Plur|PronType=Art 9 det _ _
9 gearáin gearán NOUN Noun Case=Com|Definite=Def|Gender=Masc|Number=Plur 3 nmod _ _
10 seo seo DET Det PronType=Dem 9 det _ _
11 ? ? PUNCT ? _ 3 punct _ _