(1-4-1-1-4-4-1-1-5-4-1-1)  12 bar Blues pattern (Quick Change to IV) with just one bar of chord I before it heads to chord IV.  There are variations to the pattern, including bar 12 going to chord V (turnaround) before starting again.

Examples below Driftin’ Blues (Eric Clapton), Malted Milk (Robert Johnsoon) {fingerstyle Arr. by Dan Holloway}.

Sample audio E A E E A A E E B A E E.

Eric Clapton - Drifitin' Blues

This on’es in E, so E, A, B  and their 7th chords can be used.  

Verse Bars 1-12:  Chords  E  A  E  E  A  A  E  E  B  A  EA  EB .

 Last two bars have two chords each.

Malted Milk - Robert Johnson - Fingerstyle (arr. Dan Holloway)

This one's in E, so it uses chords E, A, B  and their 7th chords. 

Verse Bars 1-12:  Chords  E  A E  E  A A E E B A E B

Other Examples of this Progression

Robert Johnson - Sweet Home Chicago

Stevie Ray Vaughan - Texas Flood