Unit 5: Function Labels: 5.9 Clause Patterns
We can identify six basic clause patterns in English:
S + P
S + P + O
S + P + Cs
S + P + A
S + P + Oi + Od
S + P + O + Co
Clauses can be illustrated by tree diagrams:
E. 

F. 

Diagram E contains only function labels, while F contains function and form labels.