A suspended chord can be created by substituting the 4th degree of a chord for the third. For example, a C major chord contains the notes C, E and G, (1, 3 and 5) while a C suspended chord contains C, F and G, (1, 4 and 5). Here are some common suspended chord shapes.
Csus4

Dbsus4

Dsus4

Esus4

Fsus4

F#sus4

Gsus4

Absus4

Asus4

Bbsus4

Bsus4

Ebsus4
