please kya koi aupcharik aur anaupcharik letters ka format bta sakta hai?

anaupacharik (informal letter)-1)from add.  2)date  3) dear xyz  4)good day wishes (in hindi namaste, namaskaar, etc.)  5) content of the letter  6) salutations  7)your name

aupacharik(formal letter)- 1)fram add.  2)date  3)meva mei  4)to add.  5)subject:-  6)dear sir or ma'm (mahoday/ mahodaya)  7) content  8)thanking  9)salutations