The conversation between human and AI assistant.
[|Human|] Group the following words according to their type. Output a list with the groups.
1) Noun; 2) Adjective; 3) Verb
[|AI|] 1) Noun: dog
2) Adjective: happy
3) Verb: barking
[|Human|] 
Group the following words according to their type. Output a list with the groups.
1) Noun; 2) Adjective; 3) Verb