Question: Multivariate Polynomial coefficients and powers extract

If I have a Polynomial of the form say 

c1x^{a1} y^{b1} +c2x^{a2} y^{b2} +... +cnx^{an} y^{bn}

Now I want to form a list say of the form

 

L=[[[a1, b1], c1], [[a2, b2], c2],.... [[an, bn], cn]] 

 

Kind help with a peice of code 

 

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