Analysis of Fugue 2, WTC 1, BWV 847

Exposition (8)
        subject        m. 1    i   (2) 
        answer (tonal) m. 3    v   (2) - counter subject (CS)
        episode        m. 5        (2) - 1st 6 notes of CS inverted
        subject        m. 7    i   (2) - CS (two components)

Middle (13)
        episode        m. 9        (2) - 1st 5 notes of S, 16ths from CS
        ME1            m. 11   III (2) - CS X 2 
        episode        m. 13       (2) - 8ths and inv. 16ths from CS
        ME2            m. 15    v  (2) - CS X 2
        episode        m. 17       (3) - like m. 5
        ME3            m. 20    i  (3) - CS X 2

Conclusion (10)
        episode        m. 22    i  (4.5) - like m. 9
        subject        m. 26.5  i  (2) - CS X 2
        deceptive cadence
        and re-cadence m. 28.5     (1)
        
Codetta (activity within final chord)   
        tonic pedal with
        final subject  m. 29.5  i  (2.5) - no CS