As white as a (a)  

As strong as a(n) (a)  

As ugly / miserable as

(a)  

As thin as a (a)  

As tall as a (a)  

As clear as (a)  

As plain as (a)  

As sharp as a (a)  

As quiet as a (a)  

As obstinate as a (a)  

As cunning as a (a)  

As black / dark as (a)  

As meek as a (a)  

As quick as (a) (a)