What is the meter, melodic contour, mode, and form of the song "What Makes You Beautiful" by One Direction?

One Direction's power pop hit "What Makes You Beautiful" (2011) was written by Savan Kotecha and producer Rami Yacoub.
Meter: The meter is 4/4, also known as common time.
Melodic contour: The melodic contour repeats an ascending and descending pattern in each part of the form. 
Mode: The song is in a major mode.
Form: The basic form is verse/chorus. 
intro 1: four measures
verse 1: (A 8 measures) (B 4 measures)
chorus 1: (8 measures) x 2 + 2 measures (7 and 8 are repeated)
intro 2: two measures
verse 2: (A 8 measures) (B 4 measures)
chorus 2: (8 measures ) x 2 + 2 measures (7 and 8 are repeated)
intro 3: 4 measures repeated
verse 3: The second half of A (4 measures) and B (four measures)
chorus 3: (8 measures) x 2 (7 and 8 are repeated three times)