 Although he wrote in all poetic forms , Du Fu is best known for his lǜshi , a type of poem with strict constraints on form and content , for example : 
 Although he wrote in all poetic forms , Du Fu is best known for his lǜshi , a type of poem with strict constraints on form and content , for example : 
Although he wrote in alll poetic forms , Du Fu is best known for his lǜshi , a type of poem w strict constraints on form and content , fir example :