>>> California car license plate number starts with CA and Arizona state car license plate number starts with AZ, can you show which of the following car license numbers belong to California and Arizona, and the one that belongs to none of them? 

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The car license number CAAZ001 starts with CA, which is the prefix for California car license plates. The number AZCA002 starts with AZ, which is the prefix for Arizona car license plates. The number C101010 has a leading letter C, which is also used in California license plates, but it does not start with the CA prefix. The number A101010 starts with AZ, which is the prefix for Arizona car license plates. The number Z420921 does not start with either CA or AZ, so it belongs to neither California nor Arizona. The number CZ23432 starts with CZ, which is not a valid prefix for either California or Arizona license plates. The number AA70873 starts with AA, which is not a valid prefix for either California or Arizona license plates. The number CAZ4536 starts with CA, which is the prefix for California car license plates.

In summary, the car license numbers CAAZ001, CAZ4536 belong to California, AZCA002 belongs to Arizona, and Z420921 belongs to neither California nor Arizona. The numbers C101010, A101010, CZ23432, and AA70873 do not have valid prefixes for either California or Arizona license plates.