I'm a bird, but
I'm a bird , but
I'm a. bird $, but
None None None None None
None {'Abbr': 'Yes', 'Degree': 'Pos'} {'Definite': 'Ind', 'Gender': 'Fem', 'Number': 'Sing'} None {'Definite': 'Ind', 'Gender': 'Fem', 'Number': 'Sing'}
case amod root punct conj
None None None None None
None None {'SpaceAfter': 'No'} None None