* For: This is used to indicate the purpose or reason for availability.
* Example: "This service is available for customers only."
* To: This is used to indicate who or what something is available to.
* Example: "The report is available to all employees."
* At: This is used to indicate the location or time something is available.
* Example: "The library is available at 10 am."
* In: This is used to indicate the format or medium something is available in.
* Example: "The book is available in both print and digital formats."
* Through: This is used to indicate the means by which something is available.
* Example: "Support is available through our website."
In addition to these, other prepositions can also be used depending on the specific context. For example:
* With: "The system is available with a range of features."
* From: "Information is available from our website."
* On: "The product is available on our online store."
It's important to choose the preposition that best clarifies the meaning of the sentence.