C1-01 Relative (Adjective) Clause
C1-02 Non-Defining Relative Clause
C1-03 Noun Clause
C1-04 Present Participle Clause
C1-05 Past Participle
C1-06 Relative Clause with Quantifiers
C1-07 By + Gerund Clause
C1-08 Passive Modals of Obligation
C1-09 Passive Present Perfect
C1-10 Possibility and Likelihood
C1-11 Concessions - While, Although, Though
C1-12 Correlative Conjunctions
